28929762 has 48 divisors (see below), whose sum is σ = 65440440. Its totient is φ = 9225216.

The previous prime is 28929757. The next prime is 28929779. The reversal of 28929762 is 26792982.

It can be written as a sum of positive squares in 4 ways, for example, as 21427641 + 7502121 = 4629^2 + 2739^2 .

It is a super-2 number, since 2×28929762² = 1673862258753288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81778 + ... + 82130.

Almost surely, 2^28929762 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28929762, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32720220).

28929762 is an abundant number, since it is smaller than the sum of its proper divisors (36510678).

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

28929762 is a wasteful number, since it uses less digits than its factorization.

28929762 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547 (or 544 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 28929762 is about 5378.6394190353. The cubic root of 28929762 is about 306.9834436707.

The spelling of 28929762 in words is "twenty-eight million, nine hundred twenty-nine thousand, seven hundred sixty-two".