181164828 has 24 divisors (see below), whose sum is σ = 455235088. Its totient is φ = 55742976.

The previous prime is 181164821. The next prime is 181164833. The reversal of 181164828 is 828461181.

181164828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181164821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 580501 + ... + 580812.

Almost surely, 2^181164828 is an apocalyptic number.

It is an amenable number.

181164828 is an abundant number, since it is smaller than the sum of its proper divisors (274070260).

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

181164828 is a wasteful number, since it uses less digits than its factorization.

181164828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161333 (or 1161331 counting only the distinct ones).

The product of its digits is 24576, while the sum is 39.

The square root of 181164828 is about 13459.7484374709. The cubic root of 181164828 is about 565.8369385477.

The spelling of 181164828 in words is "one hundred eighty-one million, one hundred sixty-four thousand, eight hundred twenty-eight".