15253840 has 40 divisors (see below), whose sum is σ = 40533120. Its totient is φ = 5229696.

The previous prime is 15253817. The next prime is 15253841. The reversal of 15253840 is 4835251.

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

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 15253799 and 15253808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15253841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13060 + ... + 14179.

It is an arithmetic number, because the mean of its divisors is an integer number (1013328).

Almost surely, 2^15253840 is an apocalyptic number.

15253840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15253840 is an abundant number, since it is smaller than the sum of its proper divisors (25279280).

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

15253840 is a wasteful number, since it uses less digits than its factorization.

15253840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27259 (or 27253 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 15253840 is about 3905.6164686257. The cubic root of 15253840 is about 248.0045958219.

The spelling of 15253840 in words is "fifteen million, two hundred fifty-three thousand, eight hundred forty".