70520328 has 64 divisors (see below), whose sum is σ = 200692800. Its totient is φ = 22930560.

The previous prime is 70520327. The next prime is 70520341. The reversal of 70520328 is 82302507.

It is a super-2 number, since 2×70520328² = 9946233322455168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (70520327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4875 + ... + 12837.

It is an arithmetic number, because the mean of its divisors is an integer number (3135825).

Almost surely, 2^70520328 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 70520328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100346400).

70520328 is an abundant number, since it is smaller than the sum of its proper divisors (130172472).

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

70520328 is a wasteful number, since it uses less digits than its factorization.

70520328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8019 (or 8009 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 70520328 is about 8397.6382394099. The cubic root of 70520328 is about 413.1471626614.

The spelling of 70520328 in words is "seventy million, five hundred twenty thousand, three hundred twenty-eight".