236628144 has 30 divisors (see below), whose sum is σ = 662230556. Its totient is φ = 78876000.

The previous prime is 236628131. The next prime is 236628149. The reversal of 236628144 is 441826632.

236628144 is a `hidden beast` number, since 23 + 6 + 628 + 1 + 4 + 4 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 236628099 and 236628108.

It is not an unprimeable number, because it can be changed into a prime (236628149) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 821482 + ... + 821769.

Almost surely, 2^236628144 is an apocalyptic number.

236628144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

236628144 is an abundant number, since it is smaller than the sum of its proper divisors (425602412).

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

236628144 is a wasteful number, since it uses less digits than its factorization.

236628144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643265 (or 1643256 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 236628144 is about 15382.7222558298. The cubic root of 236628144 is about 618.5224475772.

The spelling of 236628144 in words is "two hundred thirty-six million, six hundred twenty-eight thousand, one hundred forty-four".