381280692 has 96 divisors (see below), whose sum is σ = 1024531200. Its totient is φ = 109320192.

The previous prime is 381280681. The next prime is 381280693. The reversal of 381280692 is 296082183.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 381280692.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381280693) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 288409 + ... + 289727.

It is an arithmetic number, because the mean of its divisors is an integer number (10672200).

Almost surely, 2^381280692 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 381280692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (512265600).

381280692 is an abundant number, since it is smaller than the sum of its proper divisors (643250508).

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

381280692 is a wasteful number, since it uses less digits than its factorization.

381280692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465 (or 1463 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 381280692 is about 19526.4101155333. The cubic root of 381280692 is about 725.1284382835.

The spelling of 381280692 in words is "three hundred eighty-one million, two hundred eighty thousand, six hundred ninety-two".