70000080 has 80 divisors (see below), whose sum is σ = 218021760. Its totient is φ = 18578944.

The previous prime is 70000069. The next prime is 70000081. The reversal of 70000080 is 8000007.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×70000080² = 9800022400012800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70000081) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 62566 + ... + 63674.

It is an arithmetic number, because the mean of its divisors is an integer number (2725272).

Almost surely, 2^70000080 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 70000080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109010880).

70000080 is an abundant number, since it is smaller than the sum of its proper divisors (148021680).

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

70000080 is a wasteful number, since it uses less digits than its factorization.

70000080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388 (or 1382 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 70000080 is about 8366.6050462538. The cubic root of 70000080 is about 412.1286869821.

Adding to 70000080 its reverse (8000007), we get a palindrome (78000087).

The spelling of 70000080 in words is "seventy million, eighty", and thus it is an aban number and an uban number.