215673040 has 40 divisors (see below), whose sum is σ = 547027488. Its totient is φ = 78426240.

The previous prime is 215673023. The next prime is 215673041. The reversal of 215673040 is 40376512.

215673040 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 not an unprimeable number, because it can be changed into a prime (215673041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121662 + ... + 123421.

Almost surely, 2^215673040 is an apocalyptic number.

215673040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215673040 is an abundant number, since it is smaller than the sum of its proper divisors (331354448).

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

215673040 is a wasteful number, since it uses less digits than its factorization.

215673040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245107 (or 245101 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 215673040 is about 14685.8108390378. The cubic root of 215673040 is about 599.6971063774.

The spelling of 215673040 in words is "two hundred fifteen million, six hundred seventy-three thousand, forty".