22729994 has 16 divisors (see below), whose sum is σ = 39110208. Its totient is φ = 9705312.

The previous prime is 22729991. The next prime is 22730009. The reversal of 22729994 is 49992722.

It is a happy number.

It is a super-3 number, since 3×22729994³ (a number of 23 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (22729991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1094 + ... + 6830.

It is an arithmetic number, because the mean of its divisors is an integer number (2444388).

Almost surely, 2^22729994 is an apocalyptic number.

22729994 is a deficient number, since it is larger than the sum of its proper divisors (16380214).

22729994 is a wasteful number, since it uses less digits than its factorization.

22729994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6029.

The product of its digits is 163296, while the sum is 44.

The square root of 22729994 is about 4767.5983471765. The cubic root of 22729994 is about 283.2694724201.

The spelling of 22729994 in words is "twenty-two million, seven hundred twenty-nine thousand, nine hundred ninety-four".