22077644 has 12 divisors (see below), whose sum is σ = 38677464. Its totient is φ = 11026944.

The previous prime is 22077617. The next prime is 22077659. The reversal of 22077644 is 44677022.

It is a self number, because there is not a number n which added to its sum of digits gives 22077644.

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, 2219 + ... + 7005.

It is an arithmetic number, because the mean of its divisors is an integer number (3223122).

Almost surely, 2^22077644 is an apocalyptic number.

It is an amenable number.

22077644 is a deficient number, since it is larger than the sum of its proper divisors (16599820).

22077644 is a wasteful number, since it uses less digits than its factorization.

22077644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5944 (or 5942 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 22077644 is about 4698.6853480522. The cubic root of 22077644 is about 280.5331847288.

The spelling of 22077644 in words is "twenty-two million, seventy-seven thousand, six hundred forty-four".