28296624 has 120 divisors (see below), whose sum is σ = 81637632. Its totient is φ = 8426880.

The previous prime is 28296617. The next prime is 28296629. The reversal of 28296624 is 42669282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28296629) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 398509 + ... + 398579.

Almost surely, 2^28296624 is an apocalyptic number.

28296624 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28296624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40818816).

28296624 is an abundant number, since it is smaller than the sum of its proper divisors (53341008).

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

28296624 is a wasteful number, since it uses less digits than its factorization.

28296624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 118 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 28296624 is about 5319.4571151575. The cubic root of 28296624 is about 304.7274246644.

It can be divided in two parts, 28296 and 624, that added together give a triangular number (28920 = T₂₄₀).

The spelling of 28296624 in words is "twenty-eight million, two hundred ninety-six thousand, six hundred twenty-four".