15230540 has 24 divisors (see below), whose sum is σ = 34445040. Its totient is φ = 5623488.

The previous prime is 15230519. The next prime is 15230543. The reversal of 15230540 is 4503251.

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

It is not an unprimeable number, because it can be changed into a prime (15230543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29030 + ... + 29549.

It is an arithmetic number, because the mean of its divisors is an integer number (1435210).

Almost surely, 2^15230540 is an apocalyptic number.

15230540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15230540 is an abundant number, since it is smaller than the sum of its proper divisors (19214500).

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

15230540 is a wasteful number, since it uses less digits than its factorization.

15230540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58601 (or 58599 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 15230540 is about 3902.6324449018. The cubic root of 15230540 is about 247.8782571038.

Adding to 15230540 its reverse (4503251), we get a palindrome (19733791).

The spelling of 15230540 in words is "fifteen million, two hundred thirty thousand, five hundred forty".