28532392 has 96 divisors (see below), whose sum is σ = 68080320. Its totient is φ = 10967040.

The previous prime is 28532389. The next prime is 28532401. The reversal of 28532392 is 29323582.

28532392 = T₂₂₃ + T₂₂₄ + ... + T₅₆₆.

It is a Harshad number since it is a multiple of its sum of digits (34).

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, 663523 + ... + 663565.

It is an arithmetic number, because the mean of its divisors is an integer number (709170).

Almost surely, 2^28532392 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 28532392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34040160).

28532392 is an abundant number, since it is smaller than the sum of its proper divisors (39547928).

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

28532392 is a wasteful number, since it uses less digits than its factorization.

28532392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 110 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 28532392 is about 5341.5720532443. The cubic root of 28532392 is about 305.5714164672.

The spelling of 28532392 in words is "twenty-eight million, five hundred thirty-two thousand, three hundred ninety-two".