1628427732 has 24 divisors (see below), whose sum is σ = 3811659936. Its totient is φ = 541095648.

The previous prime is 1628427727. The next prime is 1628427743. The reversal of 1628427732 is 2377248261.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210238 + ... + 217845.

It is an arithmetic number, because the mean of its divisors is an integer number (158819164).

Almost surely, 2^1628427732 is an apocalyptic number.

1628427732 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1628427732 is an abundant number, since it is smaller than the sum of its proper divisors (2183232204).

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

1628427732 is a wasteful number, since it uses less digits than its factorization.

1628427732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428407 (or 428405 counting only the distinct ones).

The product of its digits is 225792, while the sum is 42.

The square root of 1628427732 is about 40353.7821275776. The cubic root of 1628427732 is about 1176.4934038377.

The spelling of 1628427732 in words is "one billion, six hundred twenty-eight million, four hundred twenty-seven thousand, seven hundred thirty-two".