28513910 has 8 divisors (see below), whose sum is σ = 51325056. Its totient is φ = 11405560.

The previous prime is 28513897. The next prime is 28513921. The reversal of 28513910 is 1931582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1425686 + ... + 1425705.

It is an arithmetic number, because the mean of its divisors is an integer number (6415632).

Almost surely, 2^28513910 is an apocalyptic number.

28513910 is a deficient number, since it is larger than the sum of its proper divisors (22811146).

28513910 is a wasteful number, since it uses less digits than its factorization.

28513910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2851398.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 28513910 is about 5339.8417579550. The cubic root of 28513910 is about 305.5054237436.

The spelling of 28513910 in words is "twenty-eight million, five hundred thirteen thousand, nine hundred ten".