28551960 has 64 divisors (see below), whose sum is σ = 95176800. Its totient is φ = 7613568.

The previous prime is 28551953. The next prime is 28551973. The reversal of 28551960 is 6915582.

It is a happy number.

28551960 is a `hidden beast` number, since 2 + 85 + 519 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12139 + ... + 14298.

Almost surely, 2^28551960 is an apocalyptic number.

28551960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28551960 is an abundant number, since it is smaller than the sum of its proper divisors (66624840).

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

28551960 is a wasteful number, since it uses less digits than its factorization.

28551960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26457 (or 26447 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 28551960 is about 5343.4034098129. The cubic root of 28551960 is about 305.6412558631.

The spelling of 28551960 in words is "twenty-eight million, five hundred fifty-one thousand, nine hundred sixty".