70471020 has 48 divisors (see below), whose sum is σ = 198602208. Its totient is φ = 18670080.

The previous prime is 70471013. The next prime is 70471097. The reversal of 70471020 is 2017407.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5680 + ... + 13160.

It is an arithmetic number, because the mean of its divisors is an integer number (4137546).

Almost surely, 2^70471020 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 70471020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99301104).

70471020 is an abundant number, since it is smaller than the sum of its proper divisors (128131188).

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

70471020 is a wasteful number, since it uses less digits than its factorization.

70471020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7650 (or 7648 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 70471020 is about 8394.7019006037. The cubic root of 70471020 is about 413.0508490138.

Adding to 70471020 its reverse (2017407), we get a palindrome (72488427).

The spelling of 70471020 in words is "seventy million, four hundred seventy-one thousand, twenty".