70020940 has 48 divisors (see below), whose sum is σ = 165602304. Its totient is φ = 24638400.

The previous prime is 70020931. The next prime is 70020949. The reversal of 70020940 is 4902007.

It is an interprime number because it is at equal distance from previous prime (70020931) and next prime (70020949).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (70020949) by changing a digit.

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, 1687 + ... + 11953.

It is an arithmetic number, because the mean of its divisors is an integer number (3450048).

Almost surely, 2^70020940 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 70020940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82801152).

70020940 is an abundant number, since it is smaller than the sum of its proper divisors (95581364).

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

70020940 is a wasteful number, since it uses less digits than its factorization.

70020940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10318 (or 10316 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 70020940 is about 8367.8515761216. The cubic root of 70020940 is about 412.1696209858.

Adding to 70020940 its reverse (4902007), we get a palindrome (74922947).

The spelling of 70020940 in words is "seventy million, twenty thousand, nine hundred forty".