70570290 has 96 divisors (see below), whose sum is σ = 200505024. Its totient is φ = 15845760.

The previous prime is 70570277. The next prime is 70570301. The reversal of 70570290 is 9207507.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 89277 + ... + 90063.

It is an arithmetic number, because the mean of its divisors is an integer number (2088594).

Almost surely, 2^70570290 is an apocalyptic number.

70570290 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 70570290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100252512).

70570290 is an abundant number, since it is smaller than the sum of its proper divisors (129934734).

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

70570290 is a wasteful number, since it uses less digits than its factorization.

70570290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872 (or 865 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 30.

The square root of 70570290 is about 8400.6124776709. The cubic root of 70570290 is about 413.2447079902.

Adding to 70570290 its reverse (9207507), we get a palindrome (79777797).

The spelling of 70570290 in words is "seventy million, five hundred seventy thousand, two hundred ninety".