28753137 has 80 divisors (see below), whose sum is σ = 55059840. Its totient is φ = 14556672.

The previous prime is 28753133. The next prime is 28753139. The reversal of 28753137 is 73135782.

It is not a de Polignac number, because 28753137 - 2² = 28753133 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28753133) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 183063 + ... + 183219.

It is an arithmetic number, because the mean of its divisors is an integer number (688248).

Almost surely, 2^28753137 is an apocalyptic number.

28753137 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

28753137 is a deficient number, since it is larger than the sum of its proper divisors (26306703).

28753137 is a wasteful number, since it uses less digits than its factorization.

28753137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212 (or 203 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 28753137 is about 5362.1951661610. The cubic root of 28753137 is about 306.3574254813.

The spelling of 28753137 in words is "twenty-eight million, seven hundred fifty-three thousand, one hundred thirty-seven".