70522720 has 48 divisors (see below), whose sum is σ = 167203008. Its totient is φ = 28108800.

The previous prime is 70522679. The next prime is 70522729. The reversal of 70522720 is 2722507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70522729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58120 + ... + 59320.

It is an arithmetic number, because the mean of its divisors is an integer number (3483396).

Almost surely, 2^70522720 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 70522720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83601504).

70522720 is an abundant number, since it is smaller than the sum of its proper divisors (96680288).

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

70522720 is a wasteful number, since it uses less digits than its factorization.

70522720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583 (or 1575 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 70522720 is about 8397.7806591980. The cubic root of 70522720 is about 413.1518338291.

The spelling of 70522720 in words is "seventy million, five hundred twenty-two thousand, seven hundred twenty".