28461375 has 48 divisors (see below), whose sum is σ = 53263392. Its totient is φ = 15163200.

The previous prime is 28461361. The next prime is 28461437. The reversal of 28461375 is 57316482.

28461375 is a `hidden beast` number, since 284 + 6 + 1 + 375 = 666.

It is not a de Polignac number, because 28461375 - 2⁵ = 28461343 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29907 + ... + 30843.

It is an arithmetic number, because the mean of its divisors is an integer number (1109654).

Almost surely, 2^28461375 is an apocalyptic number.

28461375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28461375 is a deficient number, since it is larger than the sum of its proper divisors (24802017).

28461375 is an frugal number, since it uses more digits than its factorization.

28461375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967 (or 945 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 28461375 is about 5334.9203367998. The cubic root of 28461375 is about 305.3176838605.

The spelling of 28461375 in words is "twenty-eight million, four hundred sixty-one thousand, three hundred seventy-five".