22078045 has 32 divisors (see below), whose sum is σ = 31186944. Its totient is φ = 14836800.

The previous prime is 22078033. The next prime is 22078079. The reversal of 22078045 is 54087022.

It is not a de Polignac number, because 22078045 - 2⁵ = 22078013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38934 + ... + 39496.

It is an arithmetic number, because the mean of its divisors is an integer number (974592).

Almost surely, 2^22078045 is an apocalyptic number.

It is an amenable number.

22078045 is a deficient number, since it is larger than the sum of its proper divisors (9108899).

22078045 is a wasteful number, since it uses less digits than its factorization.

22078045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 22078045 is about 4698.7280193686. The cubic root of 22078045 is about 280.5348831759.

The spelling of 22078045 in words is "twenty-two million, seventy-eight thousand, forty-five".