15238140 has 24 divisors (see below), whose sum is σ = 42666960. Its totient is φ = 4063488.

The previous prime is 15238127. The next prime is 15238141. The reversal of 15238140 is 4183251.

It is a self number, because there is not a number n which added to its sum of digits gives 15238140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15238141) by changing a digit.

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, 126925 + ... + 127044.

It is an arithmetic number, because the mean of its divisors is an integer number (1777790).

Almost surely, 2^15238140 is an apocalyptic number.

15238140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15238140 is an abundant number, since it is smaller than the sum of its proper divisors (27428820).

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

15238140 is a wasteful number, since it uses less digits than its factorization.

15238140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253981 (or 253979 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 15238140 is about 3903.6060252029. The cubic root of 15238140 is about 247.9194804505.

It can be divided in two parts, 15 and 238140, that multiplied together give a square (3572100 = 1890²).

The spelling of 15238140 in words is "fifteen million, two hundred thirty-eight thousand, one hundred forty".