162697920 has 448 divisors, whose sum is σ = 674168832. Its totient is φ = 32256000.

The previous prime is 162697907. The next prime is 162697921. The reversal of 162697920 is 29796261.

It is a tau number, because it is divible by the number of its divisors (448).

It is a super-2 number, since 2×162697920² = 52941226344652800, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (162697921) 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 63 ways as a sum of consecutive naturals, for example, 2291485 + ... + 2291555.

Almost surely, 2^162697920 is an apocalyptic number.

162697920 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 162697920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337084416).

162697920 is an abundant number, since it is smaller than the sum of its proper divisors (511470912).

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

162697920 is a wasteful number, since it uses less digits than its factorization.

162697920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 162697920 is about 12755.3094827213. The cubic root of 162697920 is about 545.9178988039.

The spelling of 162697920 in words is "one hundred sixty-two million, six hundred ninety-seven thousand, nine hundred twenty".