28879960 has 32 divisors (see below), whose sum is σ = 65901600. Its totient is φ = 11388160.

The previous prime is 28879931. The next prime is 28879967. The reversal of 28879960 is 6997882.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28879967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2245 + ... + 7924.

It is an arithmetic number, because the mean of its divisors is an integer number (2059425).

Almost surely, 2^28879960 is an apocalyptic number.

28879960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28879960 is an abundant number, since it is smaller than the sum of its proper divisors (37021640).

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

28879960 is a wasteful number, since it uses less digits than its factorization.

28879960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10251 (or 10247 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 28879960 is about 5374.0078154018. The cubic root of 28879960 is about 306.8071872288.

The spelling of 28879960 in words is "twenty-eight million, eight hundred seventy-nine thousand, nine hundred sixty".