197623428 has 24 divisors (see below), whose sum is σ = 462758688. Its totient is φ = 65640576.

The previous prime is 197623423. The next prime is 197623451. The reversal of 197623428 is 824326791.

It is a self number, because there is not a number n which added to its sum of digits gives 197623428.

It is not an unprimeable number, because it can be changed into a prime (197623421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25701 + ... + 32492.

It is an arithmetic number, because the mean of its divisors is an integer number (19281612).

Almost surely, 2^197623428 is an apocalyptic number.

It is an amenable number.

197623428 is an abundant number, since it is smaller than the sum of its proper divisors (265135260).

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

197623428 is a wasteful number, since it uses less digits than its factorization.

197623428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58483 (or 58481 counting only the distinct ones).

The product of its digits is 145152, while the sum is 42.

The square root of 197623428 is about 14057.8600078390. The cubic root of 197623428 is about 582.4779319557.

The spelling of 197623428 in words is "one hundred ninety-seven million, six hundred twenty-three thousand, four hundred twenty-eight".