15232340 has 48 divisors (see below), whose sum is σ = 34401024. Its totient is φ = 5644800.

The previous prime is 15232339. The next prime is 15232351. The reversal of 15232340 is 4323251.

It is a happy number.

15232340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23825 + ... + 24455.

It is an arithmetic number, because the mean of its divisors is an integer number (716688).

Almost surely, 2^15232340 is an apocalyptic number.

15232340 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 15232340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17200512).

15232340 is an abundant number, since it is smaller than the sum of its proper divisors (19168684).

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

15232340 is a wasteful number, since it uses less digits than its factorization.

15232340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728 (or 726 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 15232340 is about 3902.8630516584. The cubic root of 15232340 is about 247.8880217671. Note that the first 3 decimals are identical.

Adding to 15232340 its reverse (4323251), we get a palindrome (19555591).

It can be divided in two parts, 152 and 32340, that multiplied together give a triangular number (4915680 = T₃₁₃₅).

The spelling of 15232340 in words is "fifteen million, two hundred thirty-two thousand, three hundred forty".