1499228640 has 576 divisors, whose sum is σ = 6677064576. Its totient is φ = 297271296.

The previous prime is 1499228617. The next prime is 1499228663. The reversal of 1499228640 is 468229941.

It is an interprime number because it is at equal distance from previous prime (1499228617) and next prime (1499228663).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2227344 + ... + 2228016.

It is an arithmetic number, because the mean of its divisors is an integer number (11592126).

Almost surely, 2^1499228640 is an apocalyptic number.

1499228640 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 1499228640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3338532288).

1499228640 is an abundant number, since it is smaller than the sum of its proper divisors (5177835936).

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

1499228640 is a wasteful number, since it uses less digits than its factorization.

1499228640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731 (or 720 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 1499228640 is about 38719.8739667370. The cubic root of 1499228640 is about 1144.5179896251.

The spelling of 1499228640 in words is "one billion, four hundred ninety-nine million, two hundred twenty-eight thousand, six hundred forty".