12032238540 has 48 divisors (see below), whose sum is σ = 38503164672. Its totient is φ = 2750225856.

The previous prime is 12032238539. The next prime is 12032238551. The reversal of 12032238540 is 4583223021.

It is a super-2 number, since 2×12032238540² (a number of 21 digits) contains 22 as substring.

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 = 12032238498 and 12032238507.

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, 14323674 + ... + 14324513.

It is an arithmetic number, because the mean of its divisors is an integer number (802149264).

Almost surely, 2^12032238540 is an apocalyptic number.

12032238540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12032238540 is an abundant number, since it is smaller than the sum of its proper divisors (26470926132).

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

12032238540 is a wasteful number, since it uses less digits than its factorization.

12032238540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28648206 (or 28648204 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The spelling of 12032238540 in words is "twelve billion, thirty-two million, two hundred thirty-eight thousand, five hundred forty".