70981020 has 108 divisors (see below), whose sum is σ = 236734680. Its totient is φ = 17202240.

The previous prime is 70980991. The next prime is 70981049. The reversal of 70981020 is 2018907.

It is an interprime number because it is at equal distance from previous prime (70980991) and next prime (70981049).

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 35 ways as a sum of consecutive naturals, for example, 20151 + ... + 23409.

Almost surely, 2^70981020 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 70981020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118367340).

70981020 is an abundant number, since it is smaller than the sum of its proper divisors (165753660).

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

70981020 is a wasteful number, since it uses less digits than its factorization.

70981020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3296 (or 3280 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 70981020 is about 8425.0234421039. The cubic root of 70981020 is about 414.0448736629.

Adding to 70981020 its reverse (2018907), we get a palindrome (72999927).

It can be divided in two parts, 7098 and 1020, that added together give a palindrome (8118).

The spelling of 70981020 in words is "seventy million, nine hundred eighty-one thousand, twenty".