21374822 has 16 divisors (see below), whose sum is σ = 36705312. Its totient is φ = 9144960.

The previous prime is 21374819. The next prime is 21374849. The reversal of 21374822 is 22847312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11468 + ... + 13200.

It is an arithmetic number, because the mean of its divisors is an integer number (2294082).

Almost surely, 2^21374822 is an apocalyptic number.

21374822 is a deficient number, since it is larger than the sum of its proper divisors (15330490).

21374822 is a wasteful number, since it uses less digits than its factorization.

21374822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2623.

The product of its digits is 5376, while the sum is 29.

The square root of 21374822 is about 4623.2912519113. The cubic root of 21374822 is about 277.5241847818.

The spelling of 21374822 in words is "twenty-one million, three hundred seventy-four thousand, eight hundred twenty-two".