3726287640 has 48 divisors (see below), whose sum is σ = 12110436000. Its totient is φ = 993676608.

The previous prime is 3726287623. The next prime is 3726287671. The reversal of 3726287640 is 467826273.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5175040 + ... + 5175759.

It is an arithmetic number, because the mean of its divisors is an integer number (252300750).

Almost surely, 2^3726287640 is an apocalyptic number.

3726287640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3726287640 is an abundant number, since it is smaller than the sum of its proper divisors (8384148360).

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

3726287640 is a wasteful number, since it uses less digits than its factorization.

3726287640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10350816 (or 10350809 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 45.

The square root of 3726287640 is about 61043.3259251165. The cubic root of 3726287640 is about 1550.3346679362.

The spelling of 3726287640 in words is "three billion, seven hundred twenty-six million, two hundred eighty-seven thousand, six hundred forty".