18400622 has 8 divisors (see below), whose sum is σ = 27725376. Its totient is φ = 9158832.

The previous prime is 18400597. The next prime is 18400631. The reversal of 18400622 is 22600481.

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

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, 20183 + ... + 21074.

It is an arithmetic number, because the mean of its divisors is an integer number (3465672).

Almost surely, 2^18400622 is an apocalyptic number.

18400622 is a deficient number, since it is larger than the sum of its proper divisors (9324754).

18400622 is a wasteful number, since it uses less digits than its factorization.

18400622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41482.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 18400622 is about 4289.5946195416. The cubic root of 18400622 is about 264.0041991221.

The spelling of 18400622 in words is "eighteen million, four hundred thousand, six hundred twenty-two".