164368428 has 48 divisors (see below), whose sum is σ = 440563200. Its totient is φ = 46721664.

The previous prime is 164368397. The next prime is 164368429. The reversal of 164368428 is 824863461.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 164368428.

It is not an unprimeable number, because it can be changed into a prime (164368429) 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, 11800 + ... + 21632.

It is an arithmetic number, because the mean of its divisors is an integer number (9178400).

Almost surely, 2^164368428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 164368428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220281600).

164368428 is an abundant number, since it is smaller than the sum of its proper divisors (276194772).

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

164368428 is a wasteful number, since it uses less digits than its factorization.

164368428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10046 (or 10044 counting only the distinct ones).

The product of its digits is 221184, while the sum is 42.

The square root of 164368428 is about 12820.6251017647. The cubic root of 164368428 is about 547.7799523223.

The spelling of 164368428 in words is "one hundred sixty-four million, three hundred sixty-eight thousand, four hundred twenty-eight".