196691040 has 576 divisors, whose sum is σ = 880588800. Its totient is φ = 38817792.

The previous prime is 196691039. The next prime is 196691041. The reversal of 196691040 is 40196691.

It is an interprime number because it is at equal distance from previous prime (196691039) and next prime (196691041).

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

It is a junction number, because it is equal to n+sod(n) for n = 196690986 and 196691004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196691041) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2489721 + ... + 2489799.

It is an arithmetic number, because the mean of its divisors is an integer number (1528800).

Almost surely, 2^196691040 is an apocalyptic number.

196691040 is a gapful number since it is divisible by the number (10) 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 196691040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (440294400).

196691040 is an abundant number, since it is smaller than the sum of its proper divisors (683897760).

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

196691040 is a wasteful number, since it uses less digits than its factorization.

196691040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 196691040 is about 14024.6582846072. The cubic root of 196691040 is about 581.5604432518.

The spelling of 196691040 in words is "one hundred ninety-six million, six hundred ninety-one thousand, forty".