28824451 has 8 divisors (see below), whose sum is σ = 31048704. Its totient is φ = 26681160.

The previous prime is 28824437. The next prime is 28824457. The reversal of 28824451 is 15442882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28824451 is a prime.

It is a super-3 number, since 3×28824451³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28824457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19501 + ... + 20926.

It is an arithmetic number, because the mean of its divisors is an integer number (3881088).

Almost surely, 2^28824451 is an apocalyptic number.

28824451 is a deficient number, since it is larger than the sum of its proper divisors (2224253).

28824451 is a wasteful number, since it uses less digits than its factorization.

28824451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40481.

The product of its digits is 20480, while the sum is 34.

The square root of 28824451 is about 5368.8407501061. The cubic root of 28824451 is about 306.6104939384.

The spelling of 28824451 in words is "twenty-eight million, eight hundred twenty-four thousand, four hundred fifty-one".