215013040 has 40 divisors (see below), whose sum is σ = 545353488. Its totient is φ = 78186240.

The previous prime is 215013037. The next prime is 215013049. The reversal of 215013040 is 40310512.

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

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (215013049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121287 + ... + 123046.

Almost surely, 2^215013040 is an apocalyptic number.

215013040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215013040 is an abundant number, since it is smaller than the sum of its proper divisors (330340448).

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

215013040 is a wasteful number, since it uses less digits than its factorization.

215013040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244357 (or 244351 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 215013040 is about 14663.3229521824. The cubic root of 215013040 is about 599.0847527288.

Adding to 215013040 its reverse (40310512), we get a palindrome (255323552).

The spelling of 215013040 in words is "two hundred fifteen million, thirteen thousand, forty".