163264240 has 20 divisors (see below), whose sum is σ = 379589544. Its totient is φ = 65305664.

The previous prime is 163264187. The next prime is 163264247. The reversal of 163264240 is 42462361.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 163264199 and 163264208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163264247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1020322 + ... + 1020481.

Almost surely, 2^163264240 is an apocalyptic number.

163264240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163264240 is an abundant number, since it is smaller than the sum of its proper divisors (216325304).

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

163264240 is a wasteful number, since it uses less digits than its factorization.

163264240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040816 (or 2040810 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 163264240 is about 12777.4895812910. The cubic root of 163264240 is about 546.5505768428.

The spelling of 163264240 in words is "one hundred sixty-three million, two hundred sixty-four thousand, two hundred forty".