70271220 has 48 divisors (see below), whose sum is σ = 197144640. Its totient is φ = 18702336.

The previous prime is 70271219. The next prime is 70271221. The reversal of 70271220 is 2217207.

It is an interprime number because it is at equal distance from previous prime (70271219) and next prime (70271221).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70271221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45379 + ... + 46901.

It is an arithmetic number, because the mean of its divisors is an integer number (4107180).

Almost surely, 2^70271220 is an apocalyptic number.

It is an amenable number.

70271220 is an abundant number, since it is smaller than the sum of its proper divisors (126873420).

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

70271220 is a wasteful number, since it uses less digits than its factorization.

70271220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2304 (or 2302 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 70271220 is about 8382.7930906113. The cubic root of 70271220 is about 412.6601178216.

Adding to 70271220 its reverse (2217207), we get a palindrome (72488427).

The spelling of 70271220 in words is "seventy million, two hundred seventy-one thousand, two hundred twenty".