28472236 has 24 divisors (see below), whose sum is σ = 54676944. Its totient is φ = 12891840.

The previous prime is 28472219. The next prime is 28472273. The reversal of 28472236 is 63227482.

It is a congruent 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, 2410 + ... + 7921.

It is an arithmetic number, because the mean of its divisors is an integer number (2278206).

Almost surely, 2^28472236 is an apocalyptic number.

28472236 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

28472236 is a deficient number, since it is larger than the sum of its proper divisors (26204708).

28472236 is a wasteful number, since it uses less digits than its factorization.

28472236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10401 (or 10399 counting only the distinct ones).

The product of its digits is 32256, while the sum is 34.

The square root of 28472236 is about 5335.9381555636. The cubic root of 28472236 is about 305.3565158289.

The spelling of 28472236 in words is "twenty-eight million, four hundred seventy-two thousand, two hundred thirty-six".