22729494 has 8 divisors (see below), whose sum is σ = 45459000. Its totient is φ = 7576496.

The previous prime is 22729489. The next prime is 22729513. The reversal of 22729494 is 49492722.

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

22729494 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1894119 + ... + 1894130.

It is an arithmetic number, because the mean of its divisors is an integer number (5682375).

Almost surely, 2^22729494 is an apocalyptic number.

22729494 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.

22729494 is a wasteful number, since it uses less digits than its factorization.

22729494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3788254.

The product of its digits is 72576, while the sum is 39.

The square root of 22729494 is about 4767.5459095849. The cubic root of 22729494 is about 283.2673953441.

The spelling of 22729494 in words is "twenty-two million, seven hundred twenty-nine thousand, four hundred ninety-four".