22730478 has 8 divisors (see below), whose sum is σ = 45460968. Its totient is φ = 7576824.

The previous prime is 22730467. The next prime is 22730489. The reversal of 22730478 is 87403722.

It is an interprime number because it is at equal distance from previous prime (22730467) and next prime (22730489).

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

22730478 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1894201 + ... + 1894212.

It is an arithmetic number, because the mean of its divisors is an integer number (5682621).

Almost surely, 2^22730478 is an apocalyptic number.

22730478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22730478 is a wasteful number, since it uses less digits than its factorization.

22730478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3788418.

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 22730478 is about 4767.6491062158. The cubic root of 22730478 is about 283.2714830007.

The spelling of 22730478 in words is "twenty-two million, seven hundred thirty thousand, four hundred seventy-eight".