162993640 has 32 divisors (see below), whose sum is σ = 382682880. Its totient is φ = 62362432.

The previous prime is 162993631. The next prime is 162993653. The reversal of 162993640 is 46399261.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 162993593 and 162993602.

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, 87664 + ... + 89503.

It is an arithmetic number, because the mean of its divisors is an integer number (11958840).

Almost surely, 2^162993640 is an apocalyptic number.

162993640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

162993640 is an abundant number, since it is smaller than the sum of its proper divisors (219689240).

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

162993640 is a wasteful number, since it uses less digits than its factorization.

162993640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177201 (or 177197 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 162993640 is about 12766.8962555509. The cubic root of 162993640 is about 546.2484523622.

The spelling of 162993640 in words is "one hundred sixty-two million, nine hundred ninety-three thousand, six hundred forty".