381040002 has 48 divisors (see below), whose sum is σ = 961346880. Its totient is φ = 106812576.

The previous prime is 381039983. The next prime is 381040007. The reversal of 381040002 is 200040183.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (381040007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21852 + ... + 35207.

It is an arithmetic number, because the mean of its divisors is an integer number (20028060).

Almost surely, 2^381040002 is an apocalyptic number.

381040002 is an abundant number, since it is smaller than the sum of its proper divisors (580306878).

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

381040002 is a wasteful number, since it uses less digits than its factorization.

381040002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57127 (or 57124 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 381040002 is about 19520.2459513194. The cubic root of 381040002 is about 724.9758228957.

Adding to 381040002 its reverse (200040183), we get a palindrome (581080185).

The spelling of 381040002 in words is "three hundred eighty-one million, forty thousand, two".