70320880 has 60 divisors (see below), whose sum is σ = 190199880. Its totient is φ = 24108672.

The previous prime is 70320847. The next prime is 70320889. The reversal of 70320880 is 8802307.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70320889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5050 + ... + 12889.

It is an arithmetic number, because the mean of its divisors is an integer number (3169998).

Almost surely, 2^70320880 is an apocalyptic number.

70320880 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

70320880 is an abundant number, since it is smaller than the sum of its proper divisors (119879000).

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

70320880 is a wasteful number, since it uses less digits than its factorization.

70320880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17966 (or 17953 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 70320880 is about 8385.7545873940. The cubic root of 70320880 is about 412.7573025866.

The spelling of 70320880 in words is "seventy million, three hundred twenty thousand, eight hundred eighty".