800403640 has 32 divisors (see below), whose sum is σ = 1844836560. Its totient is φ = 312352000.

The previous prime is 800403613. The next prime is 800403679. The reversal of 800403640 is 46304008.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242386 + ... + 245665.

Almost surely, 2^800403640 is an apocalyptic number.

It is an amenable number.

800403640 is an abundant number, since it is smaller than the sum of its proper divisors (1044432920).

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

800403640 is a wasteful number, since it uses less digits than its factorization.

800403640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488103 (or 488099 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 800403640 is about 28291.4057621745. The cubic root of 800403640 is about 928.4738680483.

Adding to 800403640 its reverse (46304008), we get a palindrome (846707648).

The spelling of 800403640 in words is "eight hundred million, four hundred three thousand, six hundred forty".