1500720 has 120 divisors (see below), whose sum is σ = 5173776. Its totient is φ = 359424.

The previous prime is 1500713. The next prime is 1500731. The reversal of 1500720 is 270051.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is a self number, because there is not a number n which added to its sum of digits gives 1500720.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40542 + ... + 40578.

2^1500720 is an apocalyptic number.

1500720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1500720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2586888).

1500720 is an abundant number, since it is smaller than the sum of its proper divisors (3673056).

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

1500720 is a wasteful number, since it uses less digits than its factorization.

1500720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 15.

The square root of 1500720 is about 1225.0387748965. The cubic root of 1500720 is about 114.4897367535.

Adding to 1500720 its reverse (270051), we get a palindrome (1770771).

The spelling of 1500720 in words is "one million, five hundred thousand, seven hundred twenty".