70431700 has 72 divisors (see below), whose sum is σ = 158474232. Its totient is φ = 27156480.

The previous prime is 70431679. The next prime is 70431701. The reversal of 70431700 is 713407.

It can be written as a sum of positive squares in 12 ways, for example, as 10771524 + 59660176 = 3282^2 + 7724^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70431701) 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 23 ways as a sum of consecutive naturals, for example, 514032 + ... + 514168.

It is an arithmetic number, because the mean of its divisors is an integer number (2201031).

Almost surely, 2^70431700 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 70431700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79237116).

70431700 is an abundant number, since it is smaller than the sum of its proper divisors (88042532).

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

70431700 is a wasteful number, since it uses less digits than its factorization.

70431700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301 (or 294 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 70431700 is about 8392.3596205120. The cubic root of 70431700 is about 412.9740127911.

The spelling of 70431700 in words is "seventy million, four hundred thirty-one thousand, seven hundred".