28622910 has 16 divisors (see below), whose sum is σ = 68695056. Its totient is φ = 7632768.

The previous prime is 28622887. The next prime is 28622929. The reversal of 28622910 is 1922682.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 954097 = 28622910 / (2 + 8 + 6 + 2 + 2 + 9 + 1 + 0).

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, 477019 + ... + 477078.

It is an arithmetic number, because the mean of its divisors is an integer number (4293441).

Almost surely, 2^28622910 is an apocalyptic number.

28622910 is an abundant number, since it is smaller than the sum of its proper divisors (40072146).

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

28622910 is a wasteful number, since it uses less digits than its factorization.

28622910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954107.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 28622910 is about 5350.0383176198. The cubic root of 28622910 is about 305.8942135078.

The spelling of 28622910 in words is "twenty-eight million, six hundred twenty-two thousand, nine hundred ten".