70402816 has 72 divisors (see below), whose sum is σ = 160118784. Its totient is φ = 30581760.

The previous prime is 70402811. The next prime is 70402853. The reversal of 70402816 is 61820407.

It is not an unprimeable number, because it can be changed into a prime (70402811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64225 + ... + 65311.

It is an arithmetic number, because the mean of its divisors is an integer number (2223872).

Almost surely, 2^70402816 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 70402816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80059392).

70402816 is an abundant number, since it is smaller than the sum of its proper divisors (89715968).

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

70402816 is a wasteful number, since it uses less digits than its factorization.

70402816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137 (or 1123 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 70402816 is about 8390.6385930989. The cubic root of 70402816 is about 412.9175516031.

The spelling of 70402816 in words is "seventy million, four hundred two thousand, eight hundred sixteen".