15097840 has 40 divisors (see below), whose sum is σ = 35966448. Its totient is φ = 5890560.

The previous prime is 15097829. The next prime is 15097877. The reversal of 15097840 is 4879051.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 15097796 and 15097805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 979 + ... + 5581.

Almost surely, 2^15097840 is an apocalyptic number.

15097840 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 15097840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17983224).

15097840 is an abundant number, since it is smaller than the sum of its proper divisors (20868608).

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

15097840 is a wasteful number, since it uses less digits than its factorization.

15097840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4657 (or 4651 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 15097840 is about 3885.5939056983. The cubic root of 15097840 is about 247.1562551109.

The spelling of 15097840 in words is "fifteen million, ninety-seven thousand, eight hundred forty".