198226512 has 120 divisors (see below), whose sum is σ = 631620288. Its totient is φ = 57446400.

The previous prime is 198226507. The next prime is 198226537. The reversal of 198226512 is 215622891.

It is a super-2 number, since 2×198226512² = 78587500119372288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33712 + ... + 39152.

Almost surely, 2^198226512 is an apocalyptic number.

198226512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198226512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (315810144).

198226512 is an abundant number, since it is smaller than the sum of its proper divisors (433393776).

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

198226512 is a wasteful number, since it uses less digits than its factorization.

198226512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5489 (or 5480 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 198226512 is about 14079.2937322864. The cubic root of 198226512 is about 583.0698428683.

The spelling of 198226512 in words is "one hundred ninety-eight million, two hundred twenty-six thousand, five hundred twelve".