22991036 has 6 divisors (see below), whose sum is σ = 40234320. Its totient is φ = 11495516.

The previous prime is 22991011. The next prime is 22991041. The reversal of 22991036 is 63019922.

It is a junction number, because it is equal to n+sod(n) for n = 22990993 and 22991011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2873876 + ... + 2873883.

It is an arithmetic number, because the mean of its divisors is an integer number (6705720).

Almost surely, 2^22991036 is an apocalyptic number.

It is an amenable number.

22991036 is a deficient number, since it is larger than the sum of its proper divisors (17243284).

22991036 is a wasteful number, since it uses less digits than its factorization.

22991036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5747763 (or 5747761 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 22991036 is about 4794.8968706324. The cubic root of 22991036 is about 284.3497476429.

The spelling of 22991036 in words is "twenty-two million, nine hundred ninety-one thousand, thirty-six".