70709430 has 64 divisors (see below), whose sum is σ = 185960448. Its totient is φ = 17064960.

The previous prime is 70709423. The next prime is 70709447. The reversal of 70709430 is 3490707.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116187 + ... + 116793.

It is an arithmetic number, because the mean of its divisors is an integer number (2905632).

Almost surely, 2^70709430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70709430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92980224).

70709430 is an abundant number, since it is smaller than the sum of its proper divisors (115251018).

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

70709430 is a wasteful number, since it uses less digits than its factorization.

70709430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981.

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 70709430 is about 8408.8899386304. The cubic root of 70709430 is about 413.5161211716.

The spelling of 70709430 in words is "seventy million, seven hundred nine thousand, four hundred thirty".