507220389 has 48 divisors (see below), whose sum is σ = 827386560. Its totient is φ = 297319680.

The previous prime is 507220367. The next prime is 507220391. The reversal of 507220389 is 983022705.

It is a happy number.

507220389 is a `hidden beast` number, since 50 + 7 + 220 + 389 = 666.

It is not a de Polignac number, because 507220389 - 2⁷ = 507220261 is a prime.

It is a super-2 number, since 2×507220389² = 514545046034622642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (507220319) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 205042 + ... + 207500.

It is an arithmetic number, because the mean of its divisors is an integer number (17237220).

Almost surely, 2^507220389 is an apocalyptic number.

It is an amenable number.

507220389 is a deficient number, since it is larger than the sum of its proper divisors (320166171).

507220389 is a wasteful number, since it uses less digits than its factorization.

507220389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2562 (or 2559 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 507220389 is about 22521.5538762315. The cubic root of 507220389 is about 797.5028325748.

The spelling of 507220389 in words is "five hundred seven million, two hundred twenty thousand, three hundred eighty-nine".