6437890228 has 24 divisors (see below), whose sum is σ = 14046306624. Its totient is φ = 2508268800.

The previous prime is 6437890219. The next prime is 6437890229. The reversal of 6437890228 is 8220987346.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6437890229) 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, 10450813 + ... + 10451428.

It is an arithmetic number, because the mean of its divisors is an integer number (585262776).

Almost surely, 2^6437890228 is an apocalyptic number.

It is an amenable number.

6437890228 is an abundant number, since it is smaller than the sum of its proper divisors (7608416396).

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

6437890228 is a wasteful number, since it uses less digits than its factorization.

6437890228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20902263 (or 20902261 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 49.

The square root of 6437890228 is about 80236.4644535139. The cubic root of 6437890228 is about 1860.2923026954.

The spelling of 6437890228 in words is "six billion, four hundred thirty-seven million, eight hundred ninety thousand, two hundred twenty-eight".