197678444 has 24 divisors (see below), whose sum is σ = 361417728. Its totient is φ = 94493520.

The previous prime is 197678423. The next prime is 197678477. The reversal of 197678444 is 444876791.

197678444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×197678444² = 78153534444522272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 197678392 and 197678401.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 689 + ... + 19895.

It is an arithmetic number, because the mean of its divisors is an integer number (15059072).

Almost surely, 2^197678444 is an apocalyptic number.

It is an amenable number.

197678444 is a deficient number, since it is larger than the sum of its proper divisors (163739284).

197678444 is a wasteful number, since it uses less digits than its factorization.

197678444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19325 (or 19323 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 50.

The square root of 197678444 is about 14059.8166417631. The cubic root of 197678444 is about 582.5319785719.

The spelling of 197678444 in words is "one hundred ninety-seven million, six hundred seventy-eight thousand, four hundred forty-four".