162139428 has 48 divisors (see below), whose sum is σ = 458579520. Its totient is φ = 49132800.

The previous prime is 162139427. The next prime is 162139459. The reversal of 162139428 is 824931261.

162139428 is a `hidden beast` number, since 1 + 621 + 3 + 9 + 4 + 28 = 666.

It is a super-2 number, since 2×162139428² = 52578388224334368, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 162139392 and 162139401.

It is not an unprimeable number, because it can be changed into a prime (162139423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67053 + ... + 69428.

It is an arithmetic number, because the mean of its divisors is an integer number (9553740).

Almost surely, 2^162139428 is an apocalyptic number.

162139428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

162139428 is an abundant number, since it is smaller than the sum of its proper divisors (296440092).

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

162139428 is a wasteful number, since it uses less digits than its factorization.

162139428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136505 (or 136497 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 162139428 is about 12733.3981324704. The cubic root of 162139428 is about 545.2925265159.

The spelling of 162139428 in words is "one hundred sixty-two million, one hundred thirty-nine thousand, four hundred twenty-eight".