197023536 has 80 divisors (see below), whose sum is σ = 569829600. Its totient is φ = 65175552.

The previous prime is 197023531. The next prime is 197023537. The reversal of 197023536 is 635320791.

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

It is a self number, because there is not a number n which added to its sum of digits gives 197023536.

It is not an unprimeable number, because it can be changed into a prime (197023531) 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, 57520 + ... + 60848.

It is an arithmetic number, because the mean of its divisors is an integer number (7122870).

Almost surely, 2^197023536 is an apocalyptic number.

197023536 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 197023536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284914800).

197023536 is an abundant number, since it is smaller than the sum of its proper divisors (372806064).

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

197023536 is a wasteful number, since it uses less digits than its factorization.

197023536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3483 (or 3471 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 36.

The square root of 197023536 is about 14036.5072578616. The cubic root of 197023536 is about 581.8879580260.

The spelling of 197023536 in words is "one hundred ninety-seven million, twenty-three thousand, five hundred thirty-six".