80913000 has 128 divisors (see below), whose sum is σ = 288587520. Its totient is φ = 18489600.

The previous prime is 80912983. The next prime is 80913017. The reversal of 80913000 is 31908.

It is an interprime number because it is at equal distance from previous prime (80912983) and next prime (80913017).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19074 + ... + 22926.

It is an arithmetic number, because the mean of its divisors is an integer number (2254590).

Almost surely, 2^80913000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80913000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144293760).

80913000 is an abundant number, since it is smaller than the sum of its proper divisors (207674520).

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

80913000 is a wasteful number, since it uses less digits than its factorization.

80913000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3884 (or 3870 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 80913000 is about 8995.1653681297. The cubic root of 80913000 is about 432.5199073109.

Adding to 80913000 its reverse (31908), we get a palindrome (80944908).

The spelling of 80913000 in words is "eighty million, nine hundred thirteen thousand".