22077381 has 8 divisors (see below), whose sum is σ = 30451680. Its totient is φ = 14210672.

The previous prime is 22077359. The next prime is 22077383. The reversal of 22077381 is 18377022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22077381 is a prime.

It is a super-2 number, since 2×22077381² = 974821503638322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22077383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126795 + ... + 126968.

It is an arithmetic number, because the mean of its divisors is an integer number (3806460).

Almost surely, 2^22077381 is an apocalyptic number.

It is an amenable number.

22077381 is a deficient number, since it is larger than the sum of its proper divisors (8374299).

22077381 is a wasteful number, since it uses less digits than its factorization.

22077381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253795.

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

The square root of 22077381 is about 4698.6573614172. The cubic root of 22077381 is about 280.5320707736.

The spelling of 22077381 in words is "twenty-two million, seventy-seven thousand, three hundred eighty-one".