22621406 has 4 divisors (see below), whose sum is σ = 33932112. Its totient is φ = 11310702.

The previous prime is 22621399. The next prime is 22621433. The reversal of 22621406 is 60412622.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5655350 + ... + 5655353.

It is an arithmetic number, because the mean of its divisors is an integer number (8483028).

Almost surely, 2^22621406 is an apocalyptic number.

22621406 is a deficient number, since it is larger than the sum of its proper divisors (11310706).

22621406 is a wasteful number, since it uses less digits than its factorization.

22621406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11310705.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 22621406 is about 4756.1965897133. The cubic root of 22621406 is about 282.8176644316.

The spelling of 22621406 in words is "twenty-two million, six hundred twenty-one thousand, four hundred six".