70447392 has 72 divisors (see below), whose sum is σ = 201211920. Its totient is φ = 23379840.

The previous prime is 70447369. The next prime is 70447411. The reversal of 70447392 is 29374407.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94959 + ... + 95697.

It is an arithmetic number, because the mean of its divisors is an integer number (2794610).

Almost surely, 2^70447392 is an apocalyptic number.

70447392 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70447392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100605960).

70447392 is an abundant number, since it is smaller than the sum of its proper divisors (130764528).

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

70447392 is a wasteful number, since it uses less digits than its factorization.

70447392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086 (or 1075 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 70447392 is about 8393.2944664178. The cubic root of 70447392 is about 413.0046803598.

The spelling of 70447392 in words is "seventy million, four hundred forty-seven thousand, three hundred ninety-two".