70441220 has 12 divisors (see below), whose sum is σ = 147926604. Its totient is φ = 28176480.

The previous prime is 70441199. The next prime is 70441223. The reversal of 70441220 is 2214407.

It can be written as a sum of positive squares in 2 ways, for example, as 50922496 + 19518724 = 7136^2 + 4418^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 3522061 = 70441220 / (7 + 0 + 4 + 4 + 1 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 70441192 and 70441201.

It is not an unprimeable number, because it can be changed into a prime (70441223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1761011 + ... + 1761050.

It is an arithmetic number, because the mean of its divisors is an integer number (12327217).

Almost surely, 2^70441220 is an apocalyptic number.

It is an amenable number.

70441220 is an abundant number, since it is smaller than the sum of its proper divisors (77485384).

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

70441220 is a wasteful number, since it uses less digits than its factorization.

70441220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3522070 (or 3522068 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 70441220 is about 8392.9267839056. The cubic root of 70441220 is about 412.9926186910.

Adding to 70441220 its reverse (2214407), we get a palindrome (72655627).

The spelling of 70441220 in words is "seventy million, four hundred forty-one thousand, two hundred twenty".