28546137 has 6 divisors (see below), whose sum is σ = 41233322. Its totient is φ = 19030752.

The previous prime is 28546123. The next prime is 28546153. The reversal of 28546137 is 73164582.

It can be written as a sum of positive squares in only one way, i.e., 23970816 + 4575321 = 4896^2 + 2139^2 .

It is not a de Polignac number, because 28546137 - 2¹⁰ = 28545113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28546157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1585888 + ... + 1585905.

Almost surely, 2^28546137 is an apocalyptic number.

It is an amenable number.

28546137 is a deficient number, since it is larger than the sum of its proper divisors (12687185).

28546137 is a wasteful number, since it uses less digits than its factorization.

28546137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3171799 (or 3171796 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 28546137 is about 5342.8585045835. The cubic root of 28546137 is about 305.6204765537.

The spelling of 28546137 in words is "twenty-eight million, five hundred forty-six thousand, one hundred thirty-seven".