22138077 has 24 divisors (see below), whose sum is σ = 32650464. Its totient is φ = 13263264.

The previous prime is 22138069. The next prime is 22138087. The reversal of 22138077 is 77083122.

It is not a de Polignac number, because 22138077 - 2³ = 22138069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22138037) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71958 + ... + 72264.

It is an arithmetic number, because the mean of its divisors is an integer number (1360436).

Almost surely, 2^22138077 is an apocalyptic number.

It is an amenable number.

22138077 is a deficient number, since it is larger than the sum of its proper divisors (10512387).

22138077 is a wasteful number, since it uses less digits than its factorization.

22138077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409 (or 366 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 22138077 is about 4705.1117946336. Note that the first 3 decimals coincide. The cubic root of 22138077 is about 280.7889187882.

The spelling of 22138077 in words is "twenty-two million, one hundred thirty-eight thousand, seventy-seven".