80138700 has 144 divisors (see below), whose sum is σ = 262066560. Its totient is φ = 21003840.

The previous prime is 80138699. The next prime is 80138701. The reversal of 80138700 is 783108.

It is an interprime number because it is at equal distance from previous prime (80138699) and next prime (80138701).

It is a super-2 number, since 2×80138700² = 12844422475380000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (80138701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 180679 + ... + 181121.

Almost surely, 2^80138700 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 80138700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131033280).

80138700 is an abundant number, since it is smaller than the sum of its proper divisors (181927860).

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

80138700 is a wasteful number, since it uses less digits than its factorization.

80138700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533 (or 520 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 80138700 is about 8952.0221179351. The cubic root of 80138700 is about 431.1358109768.

The spelling of 80138700 in words is "eighty million, one hundred thirty-eight thousand, seven hundred".