1501340240 has 20 divisors (see below), whose sum is σ = 3490616244. Its totient is φ = 600536064.

The previous prime is 1501340207. The next prime is 1501340297. The reversal of 1501340240 is 420431051.

It can be written as a sum of positive squares in 2 ways, for example, as 1194670096 + 306670144 = 34564^2 + 17512^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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 3 ways as a sum of consecutive naturals, for example, 9383297 + ... + 9383456.

Almost surely, 2^1501340240 is an apocalyptic number.

1501340240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1501340240 is an abundant number, since it is smaller than the sum of its proper divisors (1989276004).

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

1501340240 is a wasteful number, since it uses less digits than its factorization.

1501340240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18766766 (or 18766760 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1501340240 is about 38747.1320228994. The cubic root of 1501340240 is about 1145.0550725785.

Adding to 1501340240 its reverse (420431051), we get a palindrome (1921771291).

The spelling of 1501340240 in words is "one billion, five hundred one million, three hundred forty thousand, two hundred forty".