15220032134028 has 72 divisors (see below), whose sum is σ = 37824858456000. Its totient is φ = 4762312918272.

The previous prime is 15220032133967. The next prime is 15220032134029. The reversal of 15220032134028 is 82043123002251.

It is a self number, because there is not a number n which added to its sum of digits gives 15220032134028.

It is not an unprimeable number, because it can be changed into a prime (15220032134029) 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, 4475478 + ... + 7104221.

Almost surely, 2^{15220032134028} is an apocalyptic number.

It is an amenable number.

15220032134028 is an abundant number, since it is smaller than the sum of its proper divisors (22604826321972).

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

15220032134028 is a wasteful number, since it uses less digits than its factorization.

15220032134028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11580119 (or 11580100 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

Adding to 15220032134028 its reverse (82043123002251), we get a palindrome (97263155136279).

The spelling of 15220032134028 in words is "fifteen trillion, two hundred twenty billion, thirty-two million, one hundred thirty-four thousand, twenty-eight".