162642640 has 40 divisors (see below), whose sum is σ = 379047168. Its totient is φ = 64901760.

The previous prime is 162642583. The next prime is 162642659. The reversal of 162642640 is 46246261.

162642640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

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, 34845 + ... + 39235.

Almost surely, 2^162642640 is an apocalyptic number.

162642640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

162642640 is an abundant number, since it is smaller than the sum of its proper divisors (216404528).

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

162642640 is a wasteful number, since it uses less digits than its factorization.

162642640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4867 (or 4861 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 162642640 is about 12753.1423578662. The cubic root of 162642640 is about 545.8560628156.

The spelling of 162642640 in words is "one hundred sixty-two million, six hundred forty-two thousand, six hundred forty".