403253838 has 144 divisors (see below), whose sum is σ = 1025846640. Its totient is φ = 113743872.

The previous prime is 403253833. The next prime is 403253857. The reversal of 403253838 is 838352304.

It is a super-2 number, since 2×403253838² = 325227315723460488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403253833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4530898 + ... + 4530986.

It is an arithmetic number, because the mean of its divisors is an integer number (7123935).

Almost surely, 2^403253838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 403253838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (512923320).

403253838 is an abundant number, since it is smaller than the sum of its proper divisors (622592802).

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

403253838 is a wasteful number, since it uses less digits than its factorization.

403253838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 403253838 is about 20081.1811903583. The cubic root of 403253838 is about 738.7987803944.

The spelling of 403253838 in words is "four hundred three million, two hundred fifty-three thousand, eight hundred thirty-eight".