70882728 has 64 divisors (see below), whose sum is σ = 209520000. Its totient is φ = 19552512.

The previous prime is 70882723. The next prime is 70882733. The reversal of 70882728 is 82728807.

It is an interprime number because it is at equal distance from previous prime (70882723) and next prime (70882733).

It is a super-2 number, since 2×70882728² = 10048722257443968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 70882728.

It is not an unprimeable number, because it can be changed into a prime (70882723) 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, 2403 + ... + 12146.

It is an arithmetic number, because the mean of its divisors is an integer number (3273750).

Almost surely, 2^70882728 is an apocalyptic number.

It is an amenable number.

70882728 is an abundant number, since it is smaller than the sum of its proper divisors (138637272).

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

70882728 is a wasteful number, since it uses less digits than its factorization.

70882728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14594 (or 14590 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 42.

The square root of 70882728 is about 8419.1880843701. The cubic root of 70882728 is about 413.8536671564.

It can be divided in two parts, 708 and 82728, that added together give a triangular number (83436 = T₄₀₈).

The spelling of 70882728 in words is "seventy million, eight hundred eighty-two thousand, seven hundred twenty-eight".