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70026880 = 275731129
BaseRepresentation
bin1000010110010…
…00011010000000
311212202201211011
410023020122000
5120411330010
610540530304
71510135000
oct413103200
9155681734
1070026880
113658a260
121b550994
131167ab31
14942c000
156233a8a
hex42c8680

70026880 has 256 divisors, whose sum is σ = 220320000. Its totient is φ = 21073920.

The previous prime is 70026863. The next prime is 70026889. The reversal of 70026880 is 8862007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70026889) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2414706 + ... + 2414734.

It is an arithmetic number, because the mean of its divisors is an integer number (860625).

Almost surely, 270026880 is an apocalyptic number.

70026880 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70026880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110160000).

70026880 is an abundant number, since it is smaller than the sum of its proper divisors (150293120).

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

70026880 is a wasteful number, since it uses less digits than its factorization.

70026880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 70026880 is about 8368.2064984081. The cubic root of 70026880 is about 412.1812756818.

Adding to 70026880 its reverse (8862007), we get a palindrome (78888887).

The spelling of 70026880 in words is "seventy million, twenty-six thousand, eight hundred eighty".