28420374 has 8 divisors (see below), whose sum is σ = 56840760. Its totient is φ = 9473456.

The previous prime is 28420369. The next prime is 28420411. The reversal of 28420374 is 47302482.

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

28420374 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2368359 + ... + 2368370.

It is an arithmetic number, because the mean of its divisors is an integer number (7105095).

Almost surely, 2^28420374 is an apocalyptic number.

28420374 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.

28420374 is a wasteful number, since it uses less digits than its factorization.

28420374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4736734.

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 28420374 is about 5331.0762515650. The cubic root of 28420374 is about 305.1710014835.

The spelling of 28420374 in words is "twenty-eight million, four hundred twenty thousand, three hundred seventy-four".