28370451 has 4 divisors (see below), whose sum is σ = 37827272. Its totient is φ = 18913632.

The previous prime is 28370417. The next prime is 28370491. The reversal of 28370451 is 15407382.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 28370451 - 2¹³ = 28362259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28370491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4728406 + ... + 4728411.

It is an arithmetic number, because the mean of its divisors is an integer number (9456818).

Almost surely, 2^28370451 is an apocalyptic number.

28370451 is a deficient number, since it is larger than the sum of its proper divisors (9456821).

28370451 is an equidigital number, since it uses as much as digits as its factorization.

28370451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9456820.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 28370451 is about 5326.3919307539. The cubic root of 28370451 is about 304.9922097804.

The spelling of 28370451 in words is "twenty-eight million, three hundred seventy thousand, four hundred fifty-one".