115212020 has 96 divisors (see below), whose sum is σ = 305786880. Its totient is φ = 35418240.

The previous prime is 115212017. The next prime is 115212023. The reversal of 115212020 is 20212511.

It is an interprime number because it is at equal distance from previous prime (115212017) and next prime (115212023).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 115211986 and 115212004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115212023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121187 + ... + 122133.

It is an arithmetic number, because the mean of its divisors is an integer number (3185280).

Almost surely, 2^115212020 is an apocalyptic number.

115212020 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 115212020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152893440).

115212020 is an abundant number, since it is smaller than the sum of its proper divisors (190574860).

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

115212020 is a wasteful number, since it uses less digits than its factorization.

115212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053 (or 1051 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 115212020 is about 10733.6862260828. The cubic root of 115212020 is about 486.5930822212.

Adding to 115212020 its reverse (20212511), we get a palindrome (135424531).

The spelling of 115212020 in words is "one hundred fifteen million, two hundred twelve thousand, twenty".