15798540 has 48 divisors (see below), whose sum is σ = 44513280. Its totient is φ = 4186560.

The previous prime is 15798467. The next prime is 15798547. The reversal of 15798540 is 4589751.

It is a super-2 number, since 2×15798540² = 499187732263200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15798547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10005 + ... + 11475.

It is an arithmetic number, because the mean of its divisors is an integer number (927360).

Almost surely, 2^15798540 is an apocalyptic number.

15798540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15798540 is an abundant number, since it is smaller than the sum of its proper divisors (28714740).

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

15798540 is a wasteful number, since it uses less digits than its factorization.

15798540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662 (or 1660 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 15798540 is about 3974.7377271966. The cubic root of 15798540 is about 250.9221411077.

The spelling of 15798540 in words is "fifteen million, seven hundred ninety-eight thousand, five hundred forty".