199220736 has 160 divisors (see below), whose sum is σ = 624210048. Its totient is φ = 55664640.

The previous prime is 199220731. The next prime is 199220741. The reversal of 199220736 is 637022991.

It is an interprime number because it is at equal distance from previous prime (199220731) and next prime (199220741).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 199220694 and 199220703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199220731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219195 + ... + 220101.

Almost surely, 2^199220736 is an apocalyptic number.

199220736 is a gapful number since it is divisible by the number (16) 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 199220736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312105024).

199220736 is an abundant number, since it is smaller than the sum of its proper divisors (424989312).

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

199220736 is a wasteful number, since it uses less digits than its factorization.

199220736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952 (or 936 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 199220736 is about 14114.5575913664. The cubic root of 199220736 is about 584.0430317951.

The spelling of 199220736 in words is "one hundred ninety-nine million, two hundred twenty thousand, seven hundred thirty-six".