197768844 has 96 divisors (see below), whose sum is σ = 631088640. Its totient is φ = 52156224.

The previous prime is 197768839. The next prime is 197768863. The reversal of 197768844 is 448867791.

It is a happy number.

It is a super-2 number, since 2×197768844² = 78225031314192672, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 234 + ... + 19889.

It is an arithmetic number, because the mean of its divisors is an integer number (6573840).

Almost surely, 2^197768844 is an apocalyptic number.

197768844 is a gapful number since it is divisible by the number (14) 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 197768844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (315544320).

197768844 is an abundant number, since it is smaller than the sum of its proper divisors (433319796).

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

197768844 is a wasteful number, since it uses less digits than its factorization.

197768844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20156 (or 20148 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The square root of 197768844 is about 14063.0311099706. The cubic root of 197768844 is about 582.6207639488.

The spelling of 197768844 in words is "one hundred ninety-seven million, seven hundred sixty-eight thousand, eight hundred forty-four".