603400256440 has 64 divisors (see below), whose sum is σ = 1363385520000. Its totient is φ = 240341188608.

The previous prime is 603400256419. The next prime is 603400256471. The reversal of 603400256440 is 44652004306.

It is a super-2 number, since 2×603400256440² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 603400256396 and 603400256405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38305686 + ... + 38321434.

It is an arithmetic number, because the mean of its divisors is an integer number (21302898750).

Almost surely, 2^603400256440 is an apocalyptic number.

It is an amenable number.

603400256440 is an abundant number, since it is smaller than the sum of its proper divisors (759985263560).

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

603400256440 is a wasteful number, since it uses less digits than its factorization.

603400256440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19744 (or 19740 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 34.

The spelling of 603400256440 in words is "six hundred three billion, four hundred million, two hundred fifty-six thousand, four hundred forty".