70228864 has 64 divisors (see below), whose sum is σ = 149817600. Its totient is φ = 32693760.

The previous prime is 70228811. The next prime is 70228897. The reversal of 70228864 is 46882207.

It is a tau number, because it is divible by the number of its divisors (64).

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, 162729 + ... + 163159.

It is an arithmetic number, because the mean of its divisors is an integer number (2340900).

Almost surely, 2^70228864 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 70228864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74908800).

70228864 is an abundant number, since it is smaller than the sum of its proper divisors (79588736).

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

70228864 is a wasteful number, since it uses less digits than its factorization.

70228864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531 (or 519 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 70228864 is about 8380.2663442160. The cubic root of 70228864 is about 412.5771908192.

The spelling of 70228864 in words is "seventy million, two hundred twenty-eight thousand, eight hundred sixty-four".