403233023440 has 80 divisors (see below), whose sum is σ = 1009799774928. Its totient is φ = 148861513728.

The previous prime is 403233023407. The next prime is 403233023441. The reversal of 403233023440 is 44320332304.

It can be written as a sum of positive squares in 8 ways, for example, as 141342913936 + 261890109504 = 375956^2 + 511752^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-4 number, since 4×403233023440⁴ (a number of 48 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 403233023399 and 403233023408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403233023441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7036182 + ... + 7093258.

Almost surely, 2^403233023440 is an apocalyptic number.

403233023440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

403233023440 is an abundant number, since it is smaller than the sum of its proper divisors (606566751488).

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

403233023440 is a wasteful number, since it uses less digits than its factorization.

403233023440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63896 (or 63890 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 28.

Adding to 403233023440 its reverse (44320332304), we get a palindrome (447553355744).

The spelling of 403233023440 in words is "four hundred three billion, two hundred thirty-three million, twenty-three thousand, four hundred forty".