15245040 has 40 divisors (see below), whose sum is σ = 47260368. Its totient is φ = 4065280.

The previous prime is 15245033. The next prime is 15245051. The reversal of 15245040 is 4054251.

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

It is a super-2 number, since 2×15245040² = 464822489203200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15244998 and 15245016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31521 + ... + 32000.

Almost surely, 2^15245040 is an apocalyptic number.

15245040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15245040 is an abundant number, since it is smaller than the sum of its proper divisors (32015328).

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

15245040 is a wasteful number, since it uses less digits than its factorization.

15245040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63537 (or 63531 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 15245040 is about 3904.4897233826. The cubic root of 15245040 is about 247.9568950404.

Adding to 15245040 its reverse (4054251), we get a palindrome (19299291).

The spelling of 15245040 in words is "fifteen million, two hundred forty-five thousand, forty".