18152940 has 144 divisors (see below), whose sum is σ = 59566752. Its totient is φ = 4091904.

The previous prime is 18152933. The next prime is 18152941. The reversal of 18152940 is 4925181.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 18152898 and 18152907.

It is not an unprimeable number, because it can be changed into a prime (18152941) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 490602 + ... + 490638.

It is an arithmetic number, because the mean of its divisors is an integer number (413658).

Almost surely, 2^18152940 is an apocalyptic number.

18152940 is a gapful number since it is divisible by the number (10) 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 18152940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29783376).

18152940 is an abundant number, since it is smaller than the sum of its proper divisors (41413812).

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

18152940 is a wasteful number, since it uses less digits than its factorization.

18152940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 18152940 is about 4260.6267144635. The cubic root of 18152940 is about 262.8142992667.

It can be divided in two parts, 1815 and 2940, that multiplied together give a square (5336100 = 2310²).

The spelling of 18152940 in words is "eighteen million, one hundred fifty-two thousand, nine hundred forty".