28373631 has 48 divisors (see below), whose sum is σ = 47591040. Its totient is φ = 14783040.

The previous prime is 28373621. The next prime is 28373641. The reversal of 28373631 is 13637382.

It is an interprime number because it is at equal distance from previous prime (28373621) and next prime (28373641).

It is not a de Polignac number, because 28373631 - 2¹¹ = 28371583 is a prime.

It is a super-2 number, since 2×28373631² = 1610125872248322, which contains 22 as substring.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 28373592 and 28373601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28373621) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 480880 + ... + 480938.

It is an arithmetic number, because the mean of its divisors is an integer number (991480).

Almost surely, 2^28373631 is an apocalyptic number.

28373631 is a deficient number, since it is larger than the sum of its proper divisors (19217409).

28373631 is a wasteful number, since it uses less digits than its factorization.

28373631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 105 counting only the distinct ones).

The product of its digits is 18144, while the sum is 33.

The square root of 28373631 is about 5326.6904359086. The cubic root of 28373631 is about 305.0036047231.

The spelling of 28373631 in words is "twenty-eight million, three hundred seventy-three thousand, six hundred thirty-one".