28934451 has 60 divisors (see below), whose sum is σ = 53017328. Its totient is φ = 15113952.

The previous prime is 28934413. The next prime is 28934453. The reversal of 28934451 is 15443982.

It is not a de Polignac number, because 28934451 - 2⁶ = 28934387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28934453) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 280866 + ... + 280968.

Almost surely, 2^28934451 is an apocalyptic number.

28934451 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

28934451 is a deficient number, since it is larger than the sum of its proper divisors (24082877).

28934451 is a wasteful number, since it uses less digits than its factorization.

28934451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150 (or 126 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 28934451 is about 5379.0752922784. The cubic root of 28934451 is about 307.0000282938. Note that the first 4 decimals are identical.

The spelling of 28934451 in words is "twenty-eight million, nine hundred thirty-four thousand, four hundred fifty-one".