120815850 has 48 divisors (see below), whose sum is σ = 306016128. Its totient is φ = 31530240.

The previous prime is 120815839. The next prime is 120815861. The reversal of 120815850 is 58518021.

It is an interprime number because it is at equal distance from previous prime (120815839) and next prime (120815861).

It is a super-2 number, since 2×120815850² = 29192939222445000, which contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1519 + ... + 15618.

It is an arithmetic number, because the mean of its divisors is an integer number (6375336).

Almost surely, 2^120815850 is an apocalyptic number.

120815850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 120815850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153008064).

120815850 is an abundant number, since it is smaller than the sum of its proper divisors (185200278).

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

120815850 is a wasteful number, since it uses less digits than its factorization.

120815850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17199 (or 17194 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 30.

The square root of 120815850 is about 10991.6263582784. The cubic root of 120815850 is about 494.3577017756.

The spelling of 120815850 in words is "one hundred twenty million, eight hundred fifteen thousand, eight hundred fifty".