18280632 has 32 divisors (see below), whose sum is σ = 45907200. Its totient is φ = 6066144.

The previous prime is 18280631. The next prime is 18280651. The reversal of 18280632 is 23608281.

It is a self number, because there is not a number n which added to its sum of digits gives 18280632.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18280631) 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, 4143 + ... + 7329.

It is an arithmetic number, because the mean of its divisors is an integer number (1434600).

Almost surely, 2^18280632 is an apocalyptic number.

18280632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18280632 is an abundant number, since it is smaller than the sum of its proper divisors (27626568).

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

18280632 is a wasteful number, since it uses less digits than its factorization.

18280632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3435 (or 3431 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 18280632 is about 4275.5855739302. The cubic root of 18280632 is about 263.4290922724.

The spelling of 18280632 in words is "eighteen million, two hundred eighty thousand, six hundred thirty-two".