23211198 has 40 divisors (see below), whose sum is σ = 54754920. Its totient is φ = 7328880.

The previous prime is 23211169. The next prime is 23211229. The reversal of 23211198 is 89111232.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 693 + ... + 6848.

It is an arithmetic number, because the mean of its divisors is an integer number (1368873).

Almost surely, 2^23211198 is an apocalyptic number.

23211198 is an abundant number, since it is smaller than the sum of its proper divisors (31543722).

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

23211198 is a wasteful number, since it uses less digits than its factorization.

23211198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7574 (or 7565 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 23211198 is about 4817.8001203869. The cubic root of 23211198 is about 285.2545094935.

It can be divided in two parts, 23211 and 198, that added together give a square (23409 = 153²).

The spelling of 23211198 in words is "twenty-three million, two hundred eleven thousand, one hundred ninety-eight".