28957475 has 12 divisors (see below), whose sum is σ = 36054984. Its totient is φ = 23070720.

The previous prime is 28957471. The next prime is 28957531. The reversal of 28957475 is 57475982.

It is a happy number.

It is not a de Polignac number, because 28957475 - 2² = 28957471 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28957471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4172 + ... + 8678.

It is an arithmetic number, because the mean of its divisors is an integer number (3004582).

Almost surely, 2^28957475 is an apocalyptic number.

28957475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28957475 is a deficient number, since it is larger than the sum of its proper divisors (7097509).

28957475 is a wasteful number, since it uses less digits than its factorization.

28957475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4774 (or 4769 counting only the distinct ones).

The product of its digits is 705600, while the sum is 47.

The square root of 28957475 is about 5381.2150115007. The cubic root of 28957475 is about 307.0814363777.

The spelling of 28957475 in words is "twenty-eight million, nine hundred fifty-seven thousand, four hundred seventy-five".