197478 has 40 divisors (see below), whose sum is σ = 470448. Its totient is φ = 61776.

The previous prime is 197453. The next prime is 197479. The reversal of 197478 is 874791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197479) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3700 + ... + 3752.

2¹⁹⁷⁴⁷⁸ is an apocalyptic number.

197478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 197478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235224).

197478 is an abundant number, since it is smaller than the sum of its proper divisors (272970).

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

197478 is a wasteful number, since it uses less digits than its factorization.

197478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90 (or 81 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 197478 is about 444.3849682426. The cubic root of 197478 is about 58.2335018084.

It can be divided in two parts, 1 and 97478, that added together give a palindrome (97479).

The spelling of 197478 in words is "one hundred ninety-seven thousand, four hundred seventy-eight".