18342072 has 96 divisors (see below), whose sum is σ = 59302800. Its totient is φ = 5237568.

The previous prime is 18342061. The next prime is 18342101. The reversal of 18342072 is 27024381.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9718 + ... + 11450.

Almost surely, 2^18342072 is an apocalyptic number.

18342072 is a gapful number since it is divisible by the number (12) 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 18342072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29651400).

18342072 is an abundant number, since it is smaller than the sum of its proper divisors (40960728).

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

18342072 is a wasteful number, since it uses less digits than its factorization.

18342072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1762 (or 1745 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 18342072 is about 4282.7645277321. The cubic root of 18342072 is about 263.7238848682.

The spelling of 18342072 in words is "eighteen million, three hundred forty-two thousand, seventy-two".