22340981 has 8 divisors (see below), whose sum is σ = 25105920. Its totient is φ = 19725552.

The previous prime is 22340959. The next prime is 22341013. The reversal of 22340981 is 18904322.

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

It is a cyclic number.

It is not a de Polignac number, because 22340981 - 2⁶ = 22340917 is a prime.

It is a super-2 number, since 2×22340981² = 998238864084722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22340921) 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, 37061 + ... + 37658.

It is an arithmetic number, because the mean of its divisors is an integer number (3138240).

Almost surely, 2^22340981 is an apocalyptic number.

It is an amenable number.

22340981 is a deficient number, since it is larger than the sum of its proper divisors (2764939).

22340981 is a wasteful number, since it uses less digits than its factorization.

22340981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74755.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 22340981 is about 4726.6246942189. The cubic root of 22340981 is about 281.6441574082.

The spelling of 22340981 in words is "twenty-two million, three hundred forty thousand, nine hundred eighty-one".