70502720 has 56 divisors (see below), whose sum is σ = 171093384. Its totient is φ = 27662336.

The previous prime is 70502687. The next prime is 70502737. The reversal of 70502720 is 2720507.

It can be written as a sum of positive squares in 4 ways, for example, as 11397376 + 59105344 = 3376^2 + 7688^2 .

It is a congruent number.

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, 14882 + ... + 19038.

It is an arithmetic number, because the mean of its divisors is an integer number (3055239).

Almost surely, 2^70502720 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 70502720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85546692).

70502720 is an abundant number, since it is smaller than the sum of its proper divisors (100590664).

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

70502720 is a wasteful number, since it uses less digits than its factorization.

70502720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4227 (or 4217 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 23.

The square root of 70502720 is about 8396.5897839540. The cubic root of 70502720 is about 413.1127739918.

The spelling of 70502720 in words is "seventy million, five hundred two thousand, seven hundred twenty".