381211632 has 30 divisors (see below), whose sum is σ = 1066863512. Its totient is φ = 127070496.

The previous prime is 381211603. The next prime is 381211651. The reversal of 381211632 is 236112183.

It is a happy number.

381211632 is a `hidden beast` number, since 3 + 8 + 1 + 21 + 1 + 632 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 381211596 and 381211605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1323508 + ... + 1323795.

Almost surely, 2^381211632 is an apocalyptic number.

It is an amenable number.

381211632 is an abundant number, since it is smaller than the sum of its proper divisors (685651880).

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

381211632 is a wasteful number, since it uses less digits than its factorization.

381211632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2647317 (or 2647308 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 381211632 is about 19524.6416612444. The cubic root of 381211632 is about 725.0846556716.

The spelling of 381211632 in words is "three hundred eighty-one million, two hundred eleven thousand, six hundred thirty-two".