70703220 has 96 divisors (see below), whose sum is σ = 229533696. Its totient is φ = 15926400.

The previous prime is 70703167. The next prime is 70703239. The reversal of 70703220 is 2230707.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 28635 + ... + 31005.

It is an arithmetic number, because the mean of its divisors is an integer number (2390976).

Almost surely, 2^70703220 is an apocalyptic number.

70703220 is a gapful number since it is divisible by the number (70) 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 70703220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114766848).

70703220 is an abundant number, since it is smaller than the sum of its proper divisors (158830476).

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

70703220 is a wasteful number, since it uses less digits than its factorization.

70703220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2461 (or 2459 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 21.

The square root of 70703220 is about 8408.5206784547. The cubic root of 70703220 is about 413.5040152413.

Adding to 70703220 its reverse (2230707), we get a palindrome (72933927).

The spelling of 70703220 in words is "seventy million, seven hundred three thousand, two hundred twenty".