800129920 has 32 divisors (see below), whose sum is σ = 1912812120. Its totient is φ = 320051712.

The previous prime is 800129903. The next prime is 800129951. The reversal of 800129920 is 29921008.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 624462 + ... + 625741.

Almost surely, 2^800129920 is an apocalyptic number.

800129920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

800129920 is an abundant number, since it is smaller than the sum of its proper divisors (1112682200).

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

800129920 is a wasteful number, since it uses less digits than its factorization.

800129920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250222 (or 1250210 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 800129920 is about 28286.5678370494. The cubic root of 800129920 is about 928.3680169375.

The spelling of 800129920 in words is "eight hundred million, one hundred twenty-nine thousand, nine hundred twenty".