533449640 has 16 divisors (see below), whose sum is σ = 1200261780. Its totient is φ = 213379840.

The previous prime is 533449639. The next prime is 533449663. The reversal of 533449640 is 46944335.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 525418084 + 8031556 = 22922^2 + 2834^2 .

It is a super-2 number, since 2×533449640² = 569137036832259200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 533449594 and 533449603.

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, 6668081 + ... + 6668160.

Almost surely, 2^533449640 is an apocalyptic number.

It is an amenable number.

533449640 is an abundant number, since it is smaller than the sum of its proper divisors (666812140).

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

533449640 is a wasteful number, since it uses less digits than its factorization.

533449640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13336252 (or 13336248 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 38.

The square root of 533449640 is about 23096.5287435147. The cubic root of 533449640 is about 811.0192118451.

The spelling of 533449640 in words is "five hundred thirty-three million, four hundred forty-nine thousand, six hundred forty".