511222230 has 48 divisors (see below), whose sum is σ = 1344133440. Its totient is φ = 134792064.

The previous prime is 511222211. The next prime is 511222247. The reversal of 511222230 is 32222115.

It is a super-2 number, since 2×511222230² = 522696336892345800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23902 + ... + 39921.

It is an arithmetic number, because the mean of its divisors is an integer number (28002780).

Almost surely, 2^511222230 is an apocalyptic number.

511222230 is an abundant number, since it is smaller than the sum of its proper divisors (832911210).

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

511222230 is a wasteful number, since it uses less digits than its factorization.

511222230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63925 (or 63922 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 511222230 is about 22610.2240148124. The cubic root of 511222230 is about 799.5947061641.

Adding to 511222230 its reverse (32222115), we get a palindrome (543444345).

The spelling of 511222230 in words is "five hundred eleven million, two hundred twenty-two thousand, two hundred thirty".