1499790720 has 128 divisors (see below), whose sum is σ = 4830467040. Its totient is φ = 395771904.

The previous prime is 1499790703. The next prime is 1499790751. The reversal of 1499790720 is 270979941.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1499790720.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182214 + ... + 190266.

Almost surely, 2^1499790720 is an apocalyptic number.

1499790720 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 1499790720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2415233520).

1499790720 is an abundant number, since it is smaller than the sum of its proper divisors (3330676320).

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

1499790720 is an equidigital number, since it uses as much as digits as its factorization.

1499790720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8172 (or 8160 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 48.

The square root of 1499790720 is about 38727.1315746467. The cubic root of 1499790720 is about 1144.6610032336.

The spelling of 1499790720 in words is "one billion, four hundred ninety-nine million, seven hundred ninety thousand, seven hundred twenty".