1512232440 has 32 divisors (see below), whose sum is σ = 4536697680. Its totient is φ = 403261952.

The previous prime is 1512232417. The next prime is 1512232489. The reversal of 1512232440 is 442322151.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1512232440.

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, 6300849 + ... + 6301088.

Almost surely, 2^1512232440 is an apocalyptic number.

1512232440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1512232440 is an abundant number, since it is smaller than the sum of its proper divisors (3024465240).

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

1512232440 is a wasteful number, since it uses less digits than its factorization.

1512232440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12601951 (or 12601947 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 1512232440 is about 38887.4329314754. The cubic root of 1512232440 is about 1147.8175216927.

Adding to 1512232440 its reverse (442322151), we get a palindrome (1954554591).

The spelling of 1512232440 in words is "one billion, five hundred twelve million, two hundred thirty-two thousand, four hundred forty".