Search a number
-
+
70748356 = 22721721249
BaseRepresentation
bin1000011011110…
…00100011000100
311221010101111111
410031320203010
5121102421411
611004214404
71516231300
oct415704304
9157111444
1070748356
1136a32318
121b83a404
1311871343
149578d00
156327721
hex43788c4

70748356 has 54 divisors (see below), whose sum is σ = 153116250. Its totient is φ = 28514304.

The previous prime is 70748347. The next prime is 70748383. The reversal of 70748356 is 65384707.

It can be written as a sum of positive squares in 3 ways, for example, as 25401600 + 45346756 = 5040^2 + 6734^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 56020 + ... + 57268.

Almost surely, 270748356 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 70748356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76558125).

70748356 is an abundant number, since it is smaller than the sum of its proper divisors (82367894).

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

70748356 is a wasteful number, since it uses less digits than its factorization.

70748356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301 (or 1275 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 70748356 is about 8411.2041944064. The cubic root of 70748356 is about 413.5919883541.

The spelling of 70748356 in words is "seventy million, seven hundred forty-eight thousand, three hundred fifty-six".

Divisors: 1 2 4 7 14 17 28 34 49 68 98 119 196 238 289 476 578 833 1156 1249 1666 2023 2498 3332 4046 4996 8092 8743 14161 17486 21233 28322 34972 42466 56644 61201 84932 122402 148631 244804 297262 360961 594524 721922 1040417 1443844 2080834 2526727 4161668 5053454 10106908 17687089 35374178 70748356