28961037 has 32 divisors (see below), whose sum is σ = 50626560. Its totient is φ = 16012080.

The previous prime is 28961033. The next prime is 28961039. The reversal of 28961037 is 73016982.

28961037 is a `hidden beast` number, since 2 + 8 + 9 + 610 + 37 = 666.

It is not a de Polignac number, because 28961037 - 2² = 28961033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28960992 and 28961010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28961033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3388 + ... + 8330.

It is an arithmetic number, because the mean of its divisors is an integer number (1582080).

Almost surely, 2^28961037 is an apocalyptic number.

28961037 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

28961037 is a deficient number, since it is larger than the sum of its proper divisors (21665523).

28961037 is a wasteful number, since it uses less digits than its factorization.

28961037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4990 (or 4984 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 28961037 is about 5381.5459674707. The cubic root of 28961037 is about 307.0940270154.

The spelling of 28961037 in words is "twenty-eight million, nine hundred sixty-one thousand, thirty-seven".