236940220 has 48 divisors (see below), whose sum is σ = 574747488. Its totient is φ = 81090560.

The previous prime is 236940211. The next prime is 236940229. The reversal of 236940220 is 22049632.

It is an interprime number because it is at equal distance from previous prime (236940211) and next prime (236940229).

It is a super-2 number, since 2×236940220² = 112281335707296800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (236940229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27937 + ... + 35416.

It is an arithmetic number, because the mean of its divisors is an integer number (11973906).

Almost surely, 2^236940220 is an apocalyptic number.

236940220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

236940220 is an abundant number, since it is smaller than the sum of its proper divisors (337807268).

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

236940220 is a wasteful number, since it uses less digits than its factorization.

236940220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63390 (or 63388 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 236940220 is about 15392.8626317524. The cubic root of 236940220 is about 618.7942400093.

Adding to 236940220 its reverse (22049632), we get a palindrome (258989852).

The spelling of 236940220 in words is "two hundred thirty-six million, nine hundred forty thousand, two hundred twenty".