28361632 has 48 divisors (see below), whose sum is σ = 60963840. Its totient is φ = 12909312.

The previous prime is 28361629. The next prime is 28361651. The reversal of 28361632 is 23616382.

It is a junction number, because it is equal to n+sod(n) for n = 28361594 and 28361603.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32433 + ... + 33295.

It is an arithmetic number, because the mean of its divisors is an integer number (1270080).

Almost surely, 2^28361632 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 28361632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30481920).

28361632 is an abundant number, since it is smaller than the sum of its proper divisors (32602208).

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

28361632 is a wasteful number, since it uses less digits than its factorization.

28361632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965 (or 957 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 28361632 is about 5325.5640076897. The cubic root of 28361632 is about 304.9606040668.

The spelling of 28361632 in words is "twenty-eight million, three hundred sixty-one thousand, six hundred thirty-two".