22137407 has 4 divisors (see below), whose sum is σ = 22154040. Its totient is φ = 22120776.

The previous prime is 22137397. The next prime is 22137439. The reversal of 22137407 is 70473122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22137407 - 2⁴ = 22137391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22137457) 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, 6128 + ... + 9045.

It is an arithmetic number, because the mean of its divisors is an integer number (5538510).

Almost surely, 2^22137407 is an apocalyptic number.

22137407 is a deficient number, since it is larger than the sum of its proper divisors (16633).

22137407 is a wasteful number, since it uses less digits than its factorization.

22137407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16632.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 22137407 is about 4705.0405949365. The cubic root of 22137407 is about 280.7860861050.

The spelling of 22137407 in words is "twenty-two million, one hundred thirty-seven thousand, four hundred seven".