18552740 has 24 divisors (see below), whose sum is σ = 41012160. Its totient is φ = 7030368.

The previous prime is 18552739. The next prime is 18552749. The reversal of 18552740 is 4725581.

It is a junction number, because it is equal to n+sod(n) for n = 18552697 and 18552706.

It is not an unprimeable number, because it can be changed into a prime (18552749) 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, 24032 + ... + 24791.

It is an arithmetic number, because the mean of its divisors is an integer number (1708840).

Almost surely, 2^18552740 is an apocalyptic number.

18552740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18552740 is an abundant number, since it is smaller than the sum of its proper divisors (22459420).

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

18552740 is a wasteful number, since it uses less digits than its factorization.

18552740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48851 (or 48849 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 18552740 is about 4307.2891706966. The cubic root of 18552740 is about 264.7297113576.

It can be divided in two parts, 185 and 52740, that added together give a palindrome (52925).

The spelling of 18552740 in words is "eighteen million, five hundred fifty-two thousand, seven hundred forty".