162345640 has 64 divisors (see below), whose sum is σ = 384024960. Its totient is φ = 61689600.

The previous prime is 162345637. The next prime is 162345653. The reversal of 162345640 is 46543261.

It is a super-2 number, since 2×162345640² = 52712213654019200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62365 + ... + 64915.

It is an arithmetic number, because the mean of its divisors is an integer number (6000390).

Almost surely, 2^162345640 is an apocalyptic number.

162345640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 162345640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192012480).

162345640 is an abundant number, since it is smaller than the sum of its proper divisors (221679320).

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

162345640 is a wasteful number, since it uses less digits than its factorization.

162345640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2642 (or 2638 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 162345640 is about 12741.4928481713. The cubic root of 162345640 is about 545.5235997086.

The spelling of 162345640 in words is "one hundred sixty-two million, three hundred forty-five thousand, six hundred forty".