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70023060 = 22325733
BaseRepresentation
bin1000010110001…
…11011110010100
311212202112120200
410023013132110
5120411214220
610540500500
71510120602
oct413073624
9155675520
1070023060
11365873a8
121b54a730
1311679183
14942a872
156232890
hex42c7794

70023060 has 72 divisors (see below), whose sum is σ = 215353320. Its totient is φ = 18417024.

The previous prime is 70023053. The next prime is 70023061. The reversal of 70023060 is 6032007.

It can be written as a sum of positive squares in 4 ways, for example, as 66564 + 69956496 = 258^2 + 8364^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70023061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 959184 + ... + 959256.

Almost surely, 270023060 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70023060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107676660).

70023060 is an abundant number, since it is smaller than the sum of its proper divisors (145330260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70023060 is an equidigital number, since it uses as much as digits as its factorization.

70023060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 70023060 is about 8367.9782504497. The cubic root of 70023060 is about 412.1737806499.

Adding to 70023060 its reverse (6032007), we get a palindrome (76055067).

The spelling of 70023060 in words is "seventy million, twenty-three thousand, sixty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 73 90 146 180 219 292 365 438 657 730 876 1095 1314 1460 2190 2628 3285 4380 5329 6570 10658 13140 15987 21316 26645 31974 47961 53290 63948 79935 95922 106580 159870 191844 239805 319740 389017 479610 778034 959220 1167051 1556068 1945085 2334102 3501153 3890170 4668204 5835255 7002306 7780340 11670510 14004612 17505765 23341020 35011530 70023060