3787232640 has 128 divisors (see below), whose sum is σ = 12117085920. Its totient is φ = 1006141440.

The previous prime is 3787232621. The next prime is 3787232651. The reversal of 3787232640 is 462327873.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 3787232592 and 3787232601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 528280 + ... + 535400.

Almost surely, 2^3787232640 is an apocalyptic number.

3787232640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3787232640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6058542960).

3787232640 is an abundant number, since it is smaller than the sum of its proper divisors (8329853280).

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

3787232640 is a wasteful number, since it uses less digits than its factorization.

3787232640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7420 (or 7408 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 42.

The square root of 3787232640 is about 61540.4959356032. The cubic root of 3787232640 is about 1558.7411277286.

The spelling of 3787232640 in words is "three billion, seven hundred eighty-seven million, two hundred thirty-two thousand, six hundred forty".