22378434 has 32 divisors (see below), whose sum is σ = 48390720. Its totient is φ = 6858432.

The previous prime is 22378429. The next prime is 22378441. The reversal of 22378434 is 43487322.

It is a junction number, because it is equal to n+sod(n) for n = 22378395 and 22378404.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29184 + ... + 29940.

It is an arithmetic number, because the mean of its divisors is an integer number (1512210).

Almost surely, 2^22378434 is an apocalyptic number.

22378434 is an abundant number, since it is smaller than the sum of its proper divisors (26012286).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22378434 is a wasteful number, since it uses less digits than its factorization.

22378434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154.

The product of its digits is 32256, while the sum is 33.

The square root of 22378434 is about 4730.5849532590. The cubic root of 22378434 is about 281.8014547320.

The spelling of 22378434 in words is "twenty-two million, three hundred seventy-eight thousand, four hundred thirty-four".