1500020540 has 48 divisors (see below), whose sum is σ = 3184900992. Its totient is φ = 593407296.

The previous prime is 1500020539. The next prime is 1500020567. The reversal of 1500020540 is 450200051.

1500020540 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 739007 + ... + 741033.

It is an arithmetic number, because the mean of its divisors is an integer number (66352104).

Almost surely, 2^1500020540 is an apocalyptic number.

1500020540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1500020540 is an abundant number, since it is smaller than the sum of its proper divisors (1684880452).

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

1500020540 is a wasteful number, since it uses less digits than its factorization.

1500020540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2426 (or 2424 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 1500020540 is about 38730.0986314262. The cubic root of 1500020540 is about 1144.7194675140.

Adding to 1500020540 its reverse (450200051), we get a palindrome (1950220591).

The spelling of 1500020540 in words is "one billion, five hundred million, twenty thousand, five hundred forty".