28318037 has 32 divisors (see below), whose sum is σ = 34974720. Its totient is φ = 22619520.

The previous prime is 28318027. The next prime is 28318051. The reversal of 28318037 is 73081382.

It is not a de Polignac number, because 28318037 - 2⁴ = 28318021 is a prime.

It is a super-2 number, since 2×28318037² = 1603822439066738, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28317994 and 28318012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28318027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 206633 + ... + 206769.

It is an arithmetic number, because the mean of its divisors is an integer number (1092960).

Almost surely, 2^28318037 is an apocalyptic number.

It is an amenable number.

28318037 is a deficient number, since it is larger than the sum of its proper divisors (6656683).

28318037 is a wasteful number, since it uses less digits than its factorization.

28318037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 28318037 is about 5321.4694399198. The cubic root of 28318037 is about 304.8042710885.

The spelling of 28318037 in words is "twenty-eight million, three hundred eighteen thousand, thirty-seven".