1000022388 has 24 divisors (see below), whose sum is σ = 2372936160. Its totient is φ = 327690720.

The previous prime is 1000022377. The next prime is 1000022389. The reversal of 1000022388 is 8832200001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000022389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 705523 + ... + 706938.

It is an arithmetic number, because the mean of its divisors is an integer number (98872340).

Almost surely, 2^1000022388 is an apocalyptic number.

It is an amenable number.

1000022388 is an abundant number, since it is smaller than the sum of its proper divisors (1372913772).

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

1000022388 is a wasteful number, since it uses less digits than its factorization.

1000022388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412527 (or 1412525 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 1000022388 is about 31623.1305850638. The cubic root of 1000022388 is about 1000.0074626110.

Adding to 1000022388 its reverse (8832200001), we get a palindrome (9832222389).

The spelling of 1000022388 in words is "one billion, twenty-two thousand, three hundred eighty-eight".