28615032 has 40 divisors (see below), whose sum is σ = 80150400. Its totient is φ = 9538128.

The previous prime is 28615021. The next prime is 28615033. The reversal of 28615032 is 23051682.

It is a super-2 number, since 2×28615032² = 1637640112722048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 28614987 and 28615005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28615033) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 21432 + ... + 22727.

It is an arithmetic number, because the mean of its divisors is an integer number (2003760).

Almost surely, 2^28615032 is an apocalyptic number.

It is an amenable number.

28615032 is an abundant number, since it is smaller than the sum of its proper divisors (51535368).

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

28615032 is a wasteful number, since it uses less digits than its factorization.

28615032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44177 (or 44164 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 28615032 is about 5349.3020105431. The cubic root of 28615032 is about 305.8661467629.

The spelling of 28615032 in words is "twenty-eight million, six hundred fifteen thousand, thirty-two".