15442230540 has 72 divisors (see below), whose sum is σ = 47526358320. Its totient is φ = 3743569280.

The previous prime is 15442230511. The next prime is 15442230547. The reversal of 15442230540 is 4503224451.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 15442230498 and 15442230507.

It is not an unprimeable number, because it can be changed into a prime (15442230547) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1056255 + ... + 1070774.

It is an arithmetic number, because the mean of its divisors is an integer number (660088310).

Almost surely, 2^15442230540 is an apocalyptic number.

15442230540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15442230540 is an abundant number, since it is smaller than the sum of its proper divisors (32084127780).

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

15442230540 is a wasteful number, since it uses less digits than its factorization.

15442230540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2127063 (or 2127050 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 15442230540 its reverse (4503224451), we get a palindrome (19945454991).

The spelling of 15442230540 in words is "fifteen billion, four hundred forty-two million, two hundred thirty thousand, five hundred forty".