70431894 has 96 divisors (see below), whose sum is σ = 173365920. Its totient is φ = 20514816.

The previous prime is 70431877. The next prime is 70431913. The reversal of 70431894 is 49813407.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 658189 + ... + 658295.

It is an arithmetic number, because the mean of its divisors is an integer number (1805895).

Almost surely, 2^70431894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70431894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86682960).

70431894 is an abundant number, since it is smaller than the sum of its proper divisors (102934026).

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

70431894 is a wasteful number, since it uses less digits than its factorization.

70431894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 70431894 is about 8392.3711786360. The cubic root of 70431894 is about 412.9743919616.

The spelling of 70431894 in words is "seventy million, four hundred thirty-one thousand, eight hundred ninety-four".