70731380 has 24 divisors (see below), whose sum is σ = 149710848. Its totient is φ = 28068768.

The previous prime is 70731341. The next prime is 70731389. The reversal of 70731380 is 8313707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70731389) 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 7 ways as a sum of consecutive naturals, for example, 11384 + ... + 16463.

It is an arithmetic number, because the mean of its divisors is an integer number (6237952).

Almost surely, 2^70731380 is an apocalyptic number.

It is an amenable number.

70731380 is an abundant number, since it is smaller than the sum of its proper divisors (78979468).

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

70731380 is a wasteful number, since it uses less digits than its factorization.

70731380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27983 (or 27981 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 70731380 is about 8410.1950036845. The cubic root of 70731380 is about 413.5589053746.

The spelling of 70731380 in words is "seventy million, seven hundred thirty-one thousand, three hundred eighty".