28622394 has 12 divisors (see below), whose sum is σ = 62015226. Its totient is φ = 9540792.

The previous prime is 28622383. The next prime is 28622413. The reversal of 28622394 is 49322682.

28622394 is a `hidden beast` number, since 28 + 622 + 3 + 9 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16281225 + 12341169 = 4035^2 + 3513^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 795049 + ... + 795084.

Almost surely, 2^28622394 is an apocalyptic number.

28622394 is an abundant number, since it is smaller than the sum of its proper divisors (33392832).

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

28622394 is a wasteful number, since it uses less digits than its factorization.

28622394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590141 (or 1590138 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 28622394 is about 5349.9900934488. The cubic root of 28622394 is about 305.8923753257.

The spelling of 28622394 in words is "twenty-eight million, six hundred twenty-two thousand, three hundred ninety-four".