387781022 has 4 divisors (see below), whose sum is σ = 581671536. Its totient is φ = 193890510.

The previous prime is 387780977. The next prime is 387781027. The reversal of 387781022 is 220187783.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387781027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96945254 + ... + 96945257.

It is an arithmetic number, because the mean of its divisors is an integer number (145417884).

Almost surely, 2^387781022 is an apocalyptic number.

387781022 is a deficient number, since it is larger than the sum of its proper divisors (193890514).

387781022 is a wasteful number, since it uses less digits than its factorization.

387781022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193890513.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 387781022 is about 19692.1563572911. The cubic root of 387781022 is about 729.2260653711.

The spelling of 387781022 in words is "three hundred eighty-seven million, seven hundred eighty-one thousand, twenty-two".