196423440 has 160 divisors (see below), whose sum is σ = 665957376. Its totient is φ = 47677440.

The previous prime is 196423439. The next prime is 196423499. The reversal of 196423440 is 44324691.

196423440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125704 + ... + 127256.

Almost surely, 2^196423440 is an apocalyptic number.

196423440 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 196423440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (332978688).

196423440 is an abundant number, since it is smaller than the sum of its proper divisors (469533936).

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

196423440 is a wasteful number, since it uses less digits than its factorization.

196423440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617 (or 1611 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 196423440 is about 14015.1146980679. The cubic root of 196423440 is about 581.2965840801.

The spelling of 196423440 in words is "one hundred ninety-six million, four hundred twenty-three thousand, four hundred forty".