511232280 has 128 divisors (see below), whose sum is σ = 1692169920. Its totient is φ = 122757120.

The previous prime is 511232269. The next prime is 511232291. The reversal of 511232280 is 82232115.

It is an interprime number because it is at equal distance from previous prime (511232269) and next prime (511232291).

It is a super-2 number, since 2×511232280² = 522716888227996800, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 511232280.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59964 + ... + 67956.

Almost surely, 2^511232280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 511232280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (846084960).

511232280 is an abundant number, since it is smaller than the sum of its proper divisors (1180937640).

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

511232280 is a wasteful number, since it uses less digits than its factorization.

511232280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8061 (or 8057 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 511232280 is about 22610.4462583117. The cubic root of 511232280 is about 799.5999458125.

Adding to 511232280 its reverse (82232115), we get a palindrome (593464395).

The spelling of 511232280 in words is "five hundred eleven million, two hundred thirty-two thousand, two hundred eighty".