28362920 has 32 divisors (see below), whose sum is σ = 64021320. Its totient is φ = 11308800.

The previous prime is 28362913. The next prime is 28362937. The reversal of 28362920 is 2926382.

It can be written as a sum of positive squares in 4 ways, for example, as 16924996 + 11437924 = 4114^2 + 3382^2 .

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, 13970 + ... + 15870.

Almost surely, 2^28362920 is an apocalyptic number.

28362920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28362920 is an abundant number, since it is smaller than the sum of its proper divisors (35658400).

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

28362920 is a wasteful number, since it uses less digits than its factorization.

28362920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2285 (or 2281 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 28362920 is about 5325.6849324758. The cubic root of 28362920 is about 304.9652204362.

The spelling of 28362920 in words is "twenty-eight million, three hundred sixty-two thousand, nine hundred twenty".