1501240020 has 48 divisors (see below), whose sum is σ = 4803969408. Its totient is φ = 343140480.

The previous prime is 1501239991. The next prime is 1501240033. The reversal of 1501240020 is 200421051.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1786771 + ... + 1787610.

It is an arithmetic number, because the mean of its divisors is an integer number (100082696).

Almost surely, 2^1501240020 is an apocalyptic number.

1501240020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1501240020 is an abundant number, since it is smaller than the sum of its proper divisors (3302729388).

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

1501240020 is a wasteful number, since it uses less digits than its factorization.

1501240020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3574400 (or 3574398 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1501240020 is about 38745.8387443090. The cubic root of 1501240020 is about 1145.0295931280.

Adding to 1501240020 its reverse (200421051), we get a palindrome (1701661071).

The spelling of 1501240020 in words is "one billion, five hundred one million, two hundred forty thousand, twenty".