28630770 has 32 divisors (see below), whose sum is σ = 78530688. Its totient is φ = 6544128.

The previous prime is 28630769. The next prime is 28630783. The reversal of 28630770 is 7703682.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67959 + ... + 68378.

It is an arithmetic number, because the mean of its divisors is an integer number (2454084).

Almost surely, 2^28630770 is an apocalyptic number.

28630770 is an abundant number, since it is smaller than the sum of its proper divisors (49899918).

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

28630770 is a wasteful number, since it uses less digits than its factorization.

28630770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136354.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 28630770 is about 5350.7728413753. The cubic root of 28630770 is about 305.9222109927.

The spelling of 28630770 in words is "twenty-eight million, six hundred thirty thousand, seven hundred seventy".