511220432 has 20 divisors (see below), whose sum is σ = 997723716. Its totient is φ = 253743360.

The previous prime is 511220419. The next prime is 511220467. The reversal of 511220432 is 234022115.

It can be written as a sum of positive squares in 2 ways, for example, as 357361216 + 153859216 = 18904^2 + 12404^2 .

It is a super-3 number, since 3×511220432³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114419 + ... + 118802.

Almost surely, 2^511220432 is an apocalyptic number.

It is an amenable number.

511220432 is a deficient number, since it is larger than the sum of its proper divisors (486503284).

511220432 is a wasteful number, since it uses less digits than its factorization.

511220432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233366 (or 233360 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 511220432 is about 22610.1842540038. The cubic root of 511220432 is about 799.5937687551.

Adding to 511220432 its reverse (234022115), we get a palindrome (745242547).

The spelling of 511220432 in words is "five hundred eleven million, two hundred twenty thousand, four hundred thirty-two".