197845536 has 144 divisors (see below), whose sum is σ = 610527456. Its totient is φ = 55931904.

The previous prime is 197845481. The next prime is 197845561. The reversal of 197845536 is 635548791.

It is a super-2 number, since 2×197845536² = 78285712230254592, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 644295 + ... + 644601.

It is an arithmetic number, because the mean of its divisors is an integer number (4239774).

Almost surely, 2^197845536 is an apocalyptic number.

197845536 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 197845536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305263728).

197845536 is an abundant number, since it is smaller than the sum of its proper divisors (412681920).

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

197845536 is a wasteful number, since it uses less digits than its factorization.

197845536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471 (or 456 counting only the distinct ones).

The product of its digits is 907200, while the sum is 48.

The square root of 197845536 is about 14065.7575693597. The cubic root of 197845536 is about 582.6960649521.

The spelling of 197845536 in words is "one hundred ninety-seven million, eight hundred forty-five thousand, five hundred thirty-six".