28236451 has 8 divisors (see below), whose sum is σ = 29777600. Its totient is φ = 26700840.

The previous prime is 28236449. The next prime is 28236457. The reversal of 28236451 is 15463282.

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

It is a cyclic number.

It is not a de Polignac number, because 28236451 - 2¹ = 28236449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28236457) 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, 13036 + ... + 15046.

It is an arithmetic number, because the mean of its divisors is an integer number (3722200).

Almost surely, 2^28236451 is an apocalyptic number.

28236451 is a deficient number, since it is larger than the sum of its proper divisors (1541149).

28236451 is a wasteful number, since it uses less digits than its factorization.

28236451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2769.

The product of its digits is 11520, while the sum is 31.

The square root of 28236451 is about 5313.7981708002. The cubic root of 28236451 is about 304.5112695949.

The spelling of 28236451 in words is "twenty-eight million, two hundred thirty-six thousand, four hundred fifty-one".