70528272 has 40 divisors (see below), whose sum is σ = 183824544. Its totient is φ = 23299584.

The previous prime is 70528267. The next prime is 70528309. The reversal of 70528272 is 27282507.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1078 + ... + 11925.

Almost surely, 2^70528272 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 70528272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91912272).

70528272 is an abundant number, since it is smaller than the sum of its proper divisors (113296272).

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

70528272 is a wasteful number, since it uses less digits than its factorization.

70528272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13127 (or 13121 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 70528272 is about 8398.1112162200. Note that the first 3 decimals coincide. The cubic root of 70528272 is about 413.1626755304.

The spelling of 70528272 in words is "seventy million, five hundred twenty-eight thousand, two hundred seventy-two".