4036403640 has 32 divisors (see below), whose sum is σ = 12109211280. Its totient is φ = 1076374272.

The previous prime is 4036403603. The next prime is 4036403671. The reversal of 4036403640 is 463046304.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 4036403598 and 4036403607.

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, 16818229 + ... + 16818468.

Almost surely, 2^4036403640 is an apocalyptic number.

4036403640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4036403640 is an abundant number, since it is smaller than the sum of its proper divisors (8072807640).

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

4036403640 is a wasteful number, since it uses less digits than its factorization.

4036403640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33636711 (or 33636707 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

The square root of 4036403640 is about 63532.6974084998. The cubic root of 4036403640 is about 1592.2021146471.

Adding to 4036403640 its reverse (463046304), we get a palindrome (4499449944).

The spelling of 4036403640 in words is "four billion, thirty-six million, four hundred three thousand, six hundred forty".