531878448 has 40 divisors (see below), whose sum is σ = 1376711488. Its totient is φ = 176945472.

The previous prime is 531878447. The next prime is 531878449. The reversal of 531878448 is 844878135.

It is an interprime number because it is at equal distance from previous prime (531878447) and next prime (531878449).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 531878397 and 531878406.

It is not an unprimeable number, because it can be changed into a prime (531878447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14511 + ... + 35697.

Almost surely, 2^531878448 is an apocalyptic number.

It is an amenable number.

531878448 is an abundant number, since it is smaller than the sum of its proper divisors (844833040).

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

531878448 is a wasteful number, since it uses less digits than its factorization.

531878448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21721 (or 21715 counting only the distinct ones).

The product of its digits is 860160, while the sum is 48.

The square root of 531878448 is about 23062.4900650385. The cubic root of 531878448 is about 810.2221856569. Note that the first 3 decimals are identical.

The spelling of 531878448 in words is "five hundred thirty-one million, eight hundred seventy-eight thousand, four hundred forty-eight".