70715220 has 48 divisors (see below), whose sum is σ = 202614720. Its totient is φ = 18418176.

The previous prime is 70715129. The next prime is 70715221. The reversal of 70715220 is 2251707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70715221) 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, 11125 + ... + 16284.

It is an arithmetic number, because the mean of its divisors is an integer number (4221140).

Almost surely, 2^70715220 is an apocalyptic number.

It is an amenable number.

70715220 is an abundant number, since it is smaller than the sum of its proper divisors (131899500).

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

70715220 is a wasteful number, since it uses less digits than its factorization.

70715220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27464 (or 27462 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 70715220 is about 8409.2342100812. The cubic root of 70715220 is about 413.5274077049.

Adding to 70715220 its reverse (2251707), we get a palindrome (72966927).

The spelling of 70715220 in words is "seventy million, seven hundred fifteen thousand, two hundred twenty".