70081320 has 32 divisors (see below), whose sum is σ = 210244320. Its totient is φ = 18688320.

The previous prime is 70081307. The next prime is 70081337. The reversal of 70081320 is 2318007.

It is a super-4 number, since 4×70081320⁴ (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291886 + ... + 292125.

It is an arithmetic number, because the mean of its divisors is an integer number (6570135).

Almost surely, 2^70081320 is an apocalyptic number.

It is an amenable number.

70081320 is an abundant number, since it is smaller than the sum of its proper divisors (140163000).

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

70081320 is a wasteful number, since it uses less digits than its factorization.

70081320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584025 (or 584021 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 70081320 is about 8371.4586542609. The cubic root of 70081320 is about 412.2880600876.

Adding to 70081320 its reverse (2318007), we get a palindrome (72399327).

The spelling of 70081320 in words is "seventy million, eighty-one thousand, three hundred twenty".