28474992 has 240 divisors, whose sum is σ = 102368448. Its totient is φ = 7188480.

The previous prime is 28474981. The next prime is 28475009. The reversal of 28474992 is 29947482.

It is a nude number because it is divisible by every one of its digits.

Its product of digits (290304) is a multiple of the sum of its prime factors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 537238 + ... + 537290.

Almost surely, 2^28474992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28474992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51184224).

28474992 is an abundant number, since it is smaller than the sum of its proper divisors (73893456).

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

28474992 is a wasteful number, since it uses less digits than its factorization.

28474992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 119 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 28474992 is about 5336.1963981848. The cubic root of 28474992 is about 305.3663679460.

The spelling of 28474992 in words is "twenty-eight million, four hundred seventy-four thousand, nine hundred ninety-two".