1500740 has 12 divisors (see below), whose sum is σ = 3151596. Its totient is φ = 600288.

The previous prime is 1500739. The next prime is 1500761. The reversal of 1500740 is 470051.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 264196 + 1236544 = 514^2 + 1112^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37499 + ... + 37538.

It is an arithmetic number, because the mean of its divisors is an integer number (262633).

2^1500740 is an apocalyptic number.

1500740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1500740 is an abundant number, since it is smaller than the sum of its proper divisors (1650856).

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

1500740 is a wasteful number, since it uses less digits than its factorization.

1500740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75046 (or 75044 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 1500740 is about 1225.0469378763. The cubic root of 1500740 is about 114.4902453504.

Adding to 1500740 its reverse (470051), we get a palindrome (1970791).

The spelling of 1500740 in words is "one million, five hundred thousand, seven hundred forty".