28929722 has 16 divisors (see below), whose sum is σ = 46248192. Its totient is φ = 13540560.

The previous prime is 28929689. The next prime is 28929751. The reversal of 28929722 is 22792982.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28929722.

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, 4529 + ... + 8852.

It is an arithmetic number, because the mean of its divisors is an integer number (2890512).

Almost surely, 2^28929722 is an apocalyptic number.

28929722 is a deficient number, since it is larger than the sum of its proper divisors (17318470).

28929722 is a wasteful number, since it uses less digits than its factorization.

28929722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13453.

The product of its digits is 72576, while the sum is 41.

The square root of 28929722 is about 5378.6357006215. The cubic root of 28929722 is about 306.9833021861.

The spelling of 28929722 in words is "twenty-eight million, nine hundred twenty-nine thousand, seven hundred twenty-two".