228649134432 has 48 divisors (see below), whose sum is σ = 616425716592. Its totient is φ = 74156474880.

The previous prime is 228649134431. The next prime is 228649134463. The reversal of 228649134432 is 234431946822.

228649134432 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228649134431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32182419 + ... + 32189522.

It is an arithmetic number, because the mean of its divisors is an integer number (12842202429).

Almost surely, 2^228649134432 is an apocalyptic number.

It is an amenable number.

228649134432 is an abundant number, since it is smaller than the sum of its proper divisors (387776582160).

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

228649134432 is a wasteful number, since it uses less digits than its factorization.

228649134432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64371991 (or 64371983 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 48.

The spelling of 228649134432 in words is "two hundred twenty-eight billion, six hundred forty-nine million, one hundred thirty-four thousand, four hundred thirty-two".