15206940 has 168 divisors, whose sum is σ = 55087200. Its totient is φ = 3452544.

The previous prime is 15206929. The next prime is 15206951. The reversal of 15206940 is 4960251.

It is an interprime number because it is at equal distance from previous prime (15206929) and next prime (15206951).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 101986 + ... + 102134.

It is an arithmetic number, because the mean of its divisors is an integer number (327900).

Almost surely, 2^15206940 is an apocalyptic number.

15206940 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 15206940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27543600).

15206940 is an abundant number, since it is smaller than the sum of its proper divisors (39880260).

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

15206940 is a wasteful number, since it uses less digits than its factorization.

15206940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183 (or 166 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 15206940 is about 3899.6076725743. The cubic root of 15206940 is about 247.7501602888.

The spelling of 15206940 in words is "fifteen million, two hundred six thousand, nine hundred forty".