28015374 has 8 divisors (see below), whose sum is σ = 56030760. Its totient is φ = 9338456.

The previous prime is 28015373. The next prime is 28015381. The reversal of 28015374 is 47351082.

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

28015374 is an admirable number.

It is a super-2 number, since 2×28015374² = 1569722360719752, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28015373) 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, 2334609 + ... + 2334620.

It is an arithmetic number, because the mean of its divisors is an integer number (7003845).

Almost surely, 2^28015374 is an apocalyptic number.

28015374 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28015374 is a wasteful number, since it uses less digits than its factorization.

28015374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4669234.

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

The square root of 28015374 is about 5292.9551292260. The cubic root of 28015374 is about 303.7144638269.

The spelling of 28015374 in words is "twenty-eight million, fifteen thousand, three hundred seventy-four".