1501240 has 32 divisors (see below), whose sum is σ = 3638880. Its totient is φ = 554112.

The previous prime is 1501229. The next prime is 1501261. The reversal of 1501240 is 421051.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 1501240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 924 + ... + 1963.

It is an arithmetic number, because the mean of its divisors is an integer number (113715).

2^1501240 is an apocalyptic number.

1501240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1501240 is an abundant number, since it is smaller than the sum of its proper divisors (2137640).

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

1501240 is a wasteful number, since it uses less digits than its factorization.

1501240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2911 (or 2907 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 1501240 is about 1225.2509946946. The cubic root of 1501240 is about 114.5029588043.

Adding to 1501240 its reverse (421051), we get a palindrome (1922291).

The spelling of 1501240 in words is "one million, five hundred one thousand, two hundred forty".