28153392 has 40 divisors (see below), whose sum is σ = 73410480. Its totient is φ = 9296640.

The previous prime is 28153381. The next prime is 28153393. The reversal of 28153392 is 29335182.

It is a super-2 number, since 2×28153392² = 1585226962211328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28153393) 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, 2542 + ... + 7922.

It is an arithmetic number, because the mean of its divisors is an integer number (1835262).

Almost surely, 2^28153392 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 28153392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36705240).

28153392 is an abundant number, since it is smaller than the sum of its proper divisors (45257088).

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

28153392 is a wasteful number, since it uses less digits than its factorization.

28153392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5501 (or 5495 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 28153392 is about 5305.9770071119. The cubic root of 28153392 is about 304.2123977361.

It can be divided in two parts, 281533 and 92, that added together give a triangular number (281625 = T₇₅₀).

The spelling of 28153392 in words is "twenty-eight million, one hundred fifty-three thousand, three hundred ninety-two".