6407543028 has 12 divisors (see below), whose sum is σ = 14950933760. Its totient is φ = 2135847672.

The previous prime is 6407543027. The next prime is 6407543053. The reversal of 6407543028 is 8203457046.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6407543027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266980948 + ... + 266980971.

Almost surely, 2^6407543028 is an apocalyptic number.

It is an amenable number.

6407543028 is an abundant number, since it is smaller than the sum of its proper divisors (8543390732).

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

6407543028 is a wasteful number, since it uses less digits than its factorization.

6407543028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533961926 (or 533961924 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

The square root of 6407543028 is about 80047.1300422445. The cubic root of 6407543028 is about 1857.3646561254.

The spelling of 6407543028 in words is "six billion, four hundred seven million, five hundred forty-three thousand, twenty-eight".