22901947 has 4 divisors (see below), whose sum is σ = 23124400. Its totient is φ = 22679496.

The previous prime is 22901933. The next prime is 22901953. The reversal of 22901947 is 74910922.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74910922 = 2 ⋅37455461.

It is a cyclic number.

It is not a de Polignac number, because 22901947 - 2⁷ = 22901819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22901917) 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, 111072 + ... + 111277.

It is an arithmetic number, because the mean of its divisors is an integer number (5781100).

Almost surely, 2^22901947 is an apocalyptic number.

22901947 is a deficient number, since it is larger than the sum of its proper divisors (222453).

22901947 is a wasteful number, since it uses less digits than its factorization.

22901947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222452.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 22901947 is about 4785.5978727845. The cubic root of 22901947 is about 283.9819923450.

The spelling of 22901947 in words is "twenty-two million, nine hundred one thousand, nine hundred forty-seven".