207427220 has 144 divisors (see below), whose sum is σ = 588809088. Its totient is φ = 59604480.

The previous prime is 207427151. The next prime is 207427247. The reversal of 207427220 is 22724702.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 207427220.

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 47 ways as a sum of consecutive naturals, for example, 259862 + ... + 260658.

It is an arithmetic number, because the mean of its divisors is an integer number (4088952).

Almost surely, 2^207427220 is an apocalyptic number.

207427220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 207427220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (294404544).

207427220 is an abundant number, since it is smaller than the sum of its proper divisors (381381868).

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

207427220 is a wasteful number, since it uses less digits than its factorization.

207427220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850 (or 835 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 26.

The square root of 207427220 is about 14402.3338386527. Note that the first 3 decimals coincide. The cubic root of 207427220 is about 591.9548487904.

The spelling of 207427220 in words is "two hundred seven million, four hundred twenty-seven thousand, two hundred twenty".