28323770 has 16 divisors (see below), whose sum is σ = 52627968. Its totient is φ = 10963920.

The previous prime is 28323767. The next prime is 28323797. The reversal of 28323770 is 7732382.

It is a happy number.

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, 45374 + ... + 45993.

It is an arithmetic number, because the mean of its divisors is an integer number (3289248).

Almost surely, 2^28323770 is an apocalyptic number.

28323770 is a deficient number, since it is larger than the sum of its proper divisors (24304198).

28323770 is a wasteful number, since it uses less digits than its factorization.

28323770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91405.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 28323770 is about 5322.0080796632. The cubic root of 28323770 is about 304.8248389569.

The spelling of 28323770 in words is "twenty-eight million, three hundred twenty-three thousand, seven hundred seventy".