28370645 has 16 divisors (see below), whose sum is σ = 34776000. Its totient is φ = 22214784.

The previous prime is 28370621. The next prime is 28370651. The reversal of 28370645 is 54607382.

It is a happy number.

It is not a de Polignac number, because 28370645 - 2⁸ = 28370389 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56606 + ... + 57104.

It is an arithmetic number, because the mean of its divisors is an integer number (2173500).

Almost surely, 2^28370645 is an apocalyptic number.

It is an amenable number.

28370645 is a deficient number, since it is larger than the sum of its proper divisors (6405355).

28370645 is a wasteful number, since it uses less digits than its factorization.

28370645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 28370645 is about 5326.4101419249. The cubic root of 28370645 is about 304.9929049680.

The spelling of 28370645 in words is "twenty-eight million, three hundred seventy thousand, six hundred forty-five".