22072406 has 8 divisors (see below), whose sum is σ = 33193200. Its totient is φ = 11008008.

The previous prime is 22072399. The next prime is 22072411. The reversal of 22072406 is 60427022.

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

It is a super-2 number, since 2×22072406² = 974382213257672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13106 + ... + 14693.

It is an arithmetic number, because the mean of its divisors is an integer number (4149150).

Almost surely, 2^22072406 is an apocalyptic number.

22072406 is a deficient number, since it is larger than the sum of its proper divisors (11120794).

22072406 is a wasteful number, since it uses less digits than its factorization.

22072406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28198.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 22072406 is about 4698.1279250357. The cubic root of 22072406 is about 280.5109971402.

Adding to 22072406 its reverse (60427022), we get a palindrome (82499428).

The spelling of 22072406 in words is "twenty-two million, seventy-two thousand, four hundred six".