1515200240 has 40 divisors (see below), whose sum is σ = 3582560880. Its totient is φ = 595805696.

The previous prime is 1515200213. The next prime is 1515200251. The reversal of 1515200240 is 420025151.

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 (20).

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, 155789 + ... + 165228.

It is an arithmetic number, because the mean of its divisors is an integer number (89564022).

Almost surely, 2^1515200240 is an apocalyptic number.

1515200240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1515200240 is an abundant number, since it is smaller than the sum of its proper divisors (2067360640).

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

1515200240 is a wasteful number, since it uses less digits than its factorization.

1515200240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321089 (or 321083 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 1515200240 is about 38925.5730850555. The cubic root of 1515200240 is about 1148.5679060759.

Adding to 1515200240 its reverse (420025151), we get a palindrome (1935225391).

The spelling of 1515200240 in words is "one billion, five hundred fifteen million, two hundred thousand, two hundred forty".