22253478 has 16 divisors (see below), whose sum is σ = 47930736. Its totient is φ = 6847200.

The previous prime is 22253437. The next prime is 22253501. The reversal of 22253478 is 87435222.

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, 142573 + ... + 142728.

It is an arithmetic number, because the mean of its divisors is an integer number (2995671).

Almost surely, 2^22253478 is an apocalyptic number.

22253478 is an abundant number, since it is smaller than the sum of its proper divisors (25677258).

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

22253478 is a wasteful number, since it uses less digits than its factorization.

22253478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285319.

The product of its digits is 26880, while the sum is 33.

The square root of 22253478 is about 4717.3592188851. The cubic root of 22253478 is about 281.2759707376.

The spelling of 22253478 in words is "twenty-two million, two hundred fifty-three thousand, four hundred seventy-eight".