165428412 has 24 divisors (see below), whose sum is σ = 399310800. Its totient is φ = 53241216.

The previous prime is 165428381. The next prime is 165428429. The reversal of 165428412 is 214824561.

It is a happy number.

165428412 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

165428412 is strictly pandigital in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237337 + ... + 238032.

It is an arithmetic number, because the mean of its divisors is an integer number (16637950).

Almost surely, 2^165428412 is an apocalyptic number.

165428412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165428412 is an abundant number, since it is smaller than the sum of its proper divisors (233882388).

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

165428412 is a wasteful number, since it uses less digits than its factorization.

165428412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475405 (or 475403 counting only the distinct ones).

The product of its digits is 15360, while the sum is 33.

The square root of 165428412 is about 12861.8976826905. The cubic root of 165428412 is about 548.9549433662.

The spelling of 165428412 in words is "one hundred sixty-five million, four hundred twenty-eight thousand, four hundred twelve".