22378473 has 18 divisors (see below), whose sum is σ = 35004606. Its totient is φ = 13770432.

The previous prime is 22378441. The next prime is 22378481. The reversal of 22378473 is 37487322.

It can be written as a sum of positive squares in 3 ways, for example, as 363609 + 22014864 = 603^2 + 4692^2 .

It is not a de Polignac number, because 22378473 - 2⁵ = 22378441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22378423) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5836 + ... + 8877.

Almost surely, 2^22378473 is an apocalyptic number.

It is an amenable number.

22378473 is a deficient number, since it is larger than the sum of its proper divisors (12626133).

22378473 is a wasteful number, since it uses less digits than its factorization.

22378473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14745 (or 14729 counting only the distinct ones).

The product of its digits is 56448, while the sum is 36.

The square root of 22378473 is about 4730.5890753689. The cubic root of 22378473 is about 281.8016184350.

The spelling of 22378473 in words is "twenty-two million, three hundred seventy-eight thousand, four hundred seventy-three".