28940373 has 24 divisors (see below), whose sum is σ = 52118976. Its totient is φ = 15033600.

The previous prime is 28940369. The next prime is 28940393. The reversal of 28940373 is 37304982.

28940373 is a `hidden beast` number, since 289 + 4 + 0 + 373 = 666.

It is not a de Polignac number, because 28940373 - 2² = 28940369 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28940393) 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 23 ways as a sum of consecutive naturals, for example, 20188 + ... + 21573.

It is an arithmetic number, because the mean of its divisors is an integer number (2171624).

Almost surely, 2^28940373 is an apocalyptic number.

It is an amenable number.

28940373 is a deficient number, since it is larger than the sum of its proper divisors (23178603).

28940373 is a wasteful number, since it uses less digits than its factorization.

28940373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41785 (or 41782 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 28940373 is about 5379.6257304761. The cubic root of 28940373 is about 307.0209713805.

The spelling of 28940373 in words is "twenty-eight million, nine hundred forty thousand, three hundred seventy-three".