383655552 has 128 divisors (see below), whose sum is σ = 1187084160. Its totient is φ = 107507712.

The previous prime is 383655551. The next prime is 383655557. The reversal of 383655552 is 255556383.

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

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (383655551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141118 + ... + 143810.

It is an arithmetic number, because the mean of its divisors is an integer number (9274095).

Almost surely, 2^383655552 is an apocalyptic number.

383655552 is a gapful number since it is divisible by the number (32) 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 383655552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (593542080).

383655552 is an abundant number, since it is smaller than the sum of its proper divisors (803428608).

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

383655552 is a wasteful number, since it uses less digits than its factorization.

383655552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2770 (or 2758 counting only the distinct ones).

The product of its digits is 540000, while the sum is 42.

The square root of 383655552 is about 19587.1272013024. The cubic root of 383655552 is about 726.6308444966.

The spelling of 383655552 in words is "three hundred eighty-three million, six hundred fifty-five thousand, five hundred fifty-two".