403768836 has 81 divisors (see below), whose sum is σ = 1089738559. Its totient is φ = 126029568.

The previous prime is 403768793. The next prime is 403768847. The reversal of 403768836 is 638867304.

The square root of 403768836 is 20094.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 262634436 + 141134400 = 16206^2 + 11880^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 403768791 and 403768800.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2049490 + ... + 2049686.

Almost surely, 2^403768836 is an apocalyptic number.

403768836 is the 20094-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 403768836

403768836 is an abundant number, since it is smaller than the sum of its proper divisors (685969723).

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

403768836 is a wasteful number, since it uses less digits than its factorization.

403768836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The cubic root of 403768836 is about 739.1131547844.

The spelling of 403768836 in words is "four hundred three million, seven hundred sixty-eight thousand, eight hundred thirty-six".