381647652 has 12 divisors (see below), whose sum is σ = 890511216. Its totient is φ = 127215880.

The previous prime is 381647641. The next prime is 381647663. The reversal of 381647652 is 256746183.

381647652 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (381647641) and next prime (381647663).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×381647652² = 291309860554226208, which contains 22 as substring.

It is a plaindrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15901974 + ... + 15901997.

It is an arithmetic number, because the mean of its divisors is an integer number (74209268).

Almost surely, 2^381647652 is an apocalyptic number.

It is an amenable number.

381647652 is an abundant number, since it is smaller than the sum of its proper divisors (508863564).

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

381647652 is a wasteful number, since it uses less digits than its factorization.

381647652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31803978 (or 31803976 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The square root of 381647652 is about 19535.8043601998. The cubic root of 381647652 is about 725.3609946972.

The spelling of 381647652 in words is "three hundred eighty-one million, six hundred forty-seven thousand, six hundred fifty-two".