15345040 has 40 divisors (see below), whose sum is σ = 36122688. Its totient is φ = 6061440.

The previous prime is 15345007. The next prime is 15345041. The reversal of 15345040 is 4054351.

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

It is not an unprimeable number, because it can be changed into a prime (15345041) 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, 5485 + ... + 7795.

Almost surely, 2^15345040 is an apocalyptic number.

15345040 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 15345040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18061344).

15345040 is an abundant number, since it is smaller than the sum of its proper divisors (20777648).

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

15345040 is a wasteful number, since it uses less digits than its factorization.

15345040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2407 (or 2401 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 15345040 is about 3917.2745627541. The cubic root of 15345040 is about 248.4978725289.

Adding to 15345040 its reverse (4054351), we get a palindrome (19399391).

The spelling of 15345040 in words is "fifteen million, three hundred forty-five thousand, forty".