22478632 has 32 divisors (see below), whose sum is σ = 46300320. Its totient is φ = 10146240.

The previous prime is 22478629. The next prime is 22478657. The reversal of 22478632 is 23687422.

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, 13003 + ... + 14629.

It is an arithmetic number, because the mean of its divisors is an integer number (1446885).

Almost surely, 2^22478632 is an apocalyptic number.

22478632 is a gapful number since it is divisible by the number (22) 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 22478632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23150160).

22478632 is an abundant number, since it is smaller than the sum of its proper divisors (23821688).

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

22478632 is a wasteful number, since it uses less digits than its factorization.

22478632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1801 (or 1797 counting only the distinct ones).

The product of its digits is 32256, while the sum is 34.

The square root of 22478632 is about 4741.1635702642. The cubic root of 22478632 is about 282.2214112123.

The spelling of 22478632 in words is "twenty-two million, four hundred seventy-eight thousand, six hundred thirty-two".