207213144 has 32 divisors (see below), whose sum is σ = 520905840. Its totient is φ = 68688000.

The previous prime is 207213137. The next prime is 207213179. The reversal of 207213144 is 441312702.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

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 7 ways as a sum of consecutive naturals, for example, 19507 + ... + 28194.

Almost surely, 2^207213144 is an apocalyptic number.

207213144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

207213144 is an abundant number, since it is smaller than the sum of its proper divisors (313692696).

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

207213144 is a wasteful number, since it uses less digits than its factorization.

207213144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47891 (or 47887 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 207213144 is about 14394.8999301836. The cubic root of 207213144 is about 591.7511356579.

Adding to 207213144 its reverse (441312702), we get a palindrome (648525846).

The spelling of 207213144 in words is "two hundred seven million, two hundred thirteen thousand, one hundred forty-four".