23198490 has 96 divisors (see below), whose sum is σ = 71974656. Its totient is φ = 5068800.

The previous prime is 23198479. The next prime is 23198491. The reversal of 23198490 is 9489132.

It is not an unprimeable number, because it can be changed into a prime (23198491) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13690 + ... + 15290.

It is an arithmetic number, because the mean of its divisors is an integer number (749736).

Almost surely, 2^23198490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23198490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35987328).

23198490 is an abundant number, since it is smaller than the sum of its proper divisors (48776166).

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

23198490 is a wasteful number, since it uses less digits than its factorization.

23198490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644 (or 1641 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 23198490 is about 4816.4810806231. The cubic root of 23198490 is about 285.2024415783.

The spelling of 23198490 in words is "twenty-three million, one hundred ninety-eight thousand, four hundred ninety".