196281540 has 288 divisors, whose sum is σ = 766112256. Its totient is φ = 39536640.

The previous prime is 196281539. The next prime is 196281577. The reversal of 196281540 is 45182691.

196281540 is a `hidden beast` number, since 1 + 96 + 28 + 1 + 540 = 666.

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 = 196281495 and 196281504.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 376480 + ... + 377000.

It is an arithmetic number, because the mean of its divisors is an integer number (2660112).

Almost surely, 2^196281540 is an apocalyptic number.

196281540 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 196281540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (383056128).

196281540 is an abundant number, since it is smaller than the sum of its proper divisors (569830716).

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

196281540 is a wasteful number, since it uses less digits than its factorization.

196281540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579 (or 574 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 196281540 is about 14010.0513917687. The cubic root of 196281540 is about 581.1565704843.

The spelling of 196281540 in words is "one hundred ninety-six million, two hundred eighty-one thousand, five hundred forty".