15798240 has 240 divisors, whose sum is σ = 59276448. Its totient is φ = 3953664.

The previous prime is 15798239. The next prime is 15798241. The reversal of 15798240 is 4289751.

15798240 is a `hidden beast` number, since 1 + 579 + 82 + 4 + 0 = 666.

15798240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (15798239) and next prime (15798241).

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 15798195 and 15798204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15798241) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 298054 + ... + 298106.

Almost surely, 2^15798240 is an apocalyptic number.

15798240 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 15798240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29638224).

15798240 is an abundant number, since it is smaller than the sum of its proper divisors (43478208).

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

15798240 is a wasteful number, since it uses less digits than its factorization.

15798240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 15798240 is about 3974.6999886784. The cubic root of 15798240 is about 250.9205528361.

The spelling of 15798240 in words is "fifteen million, seven hundred ninety-eight thousand, two hundred forty".