80028000 has 480 divisors, whose sum is σ = 332972640. Its totient is φ = 18662400.

The previous prime is 80027989. The next prime is 80028043. The reversal of 80028000 is 82008.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4211991 + ... + 4212009.

It is an arithmetic number, because the mean of its divisors is an integer number (693693).

Almost surely, 2^80028000 is an apocalyptic number.

80028000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80028000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166486320).

80028000 is an abundant number, since it is smaller than the sum of its proper divisors (252944640).

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

80028000 is a wasteful number, since it uses less digits than its factorization.

80028000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69 (or 42 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 80028000 is about 8945.8370206482. The cubic root of 80028000 is about 430.9372022854.

The spelling of 80028000 in words is "eighty million, twenty-eight thousand".