1500021340 has 12 divisors (see below), whose sum is σ = 3150044856. Its totient is φ = 600008528.

The previous prime is 1500021323. The next prime is 1500021349. The reversal of 1500021340 is 431200051.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1500021349) 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 3 ways as a sum of consecutive naturals, for example, 37500514 + ... + 37500553.

It is an arithmetic number, because the mean of its divisors is an integer number (262503738).

Almost surely, 2^1500021340 is an apocalyptic number.

1500021340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1500021340 is an abundant number, since it is smaller than the sum of its proper divisors (1650023516).

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

1500021340 is a wasteful number, since it uses less digits than its factorization.

1500021340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75001076 (or 75001074 counting only the distinct ones).

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

The square root of 1500021340 is about 38730.1089593097. The cubic root of 1500021340 is about 1144.7196710169.

Adding to 1500021340 its reverse (431200051), we get a palindrome (1931221391).

The spelling of 1500021340 in words is "one billion, five hundred million, twenty-one thousand, three hundred forty".