196499520 has 504 divisors, whose sum is σ = 845417664. Its totient is φ = 42550272.

The previous prime is 196499519. The next prime is 196499521. The reversal of 196499520 is 25994691.

It is an interprime number because it is at equal distance from previous prime (196499519) and next prime (196499521).

It is a tau number, because it is divible by the number of its divisors (504).

It is a super-2 number, since 2×196499520² = 77224122720460800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (196499521) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 10342071 + ... + 10342089.

It is an arithmetic number, because the mean of its divisors is an integer number (1677416).

Almost surely, 2^196499520 is an apocalyptic number.

196499520 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 196499520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (422708832).

196499520 is an abundant number, since it is smaller than the sum of its proper divisors (648918144).

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

196499520 is an equidigital number, since it uses as much as digits as its factorization.

196499520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 196499520 is about 14017.8286478327. The cubic root of 196499520 is about 581.3716249128.

The spelling of 196499520 in words is "one hundred ninety-six million, four hundred ninety-nine thousand, five hundred twenty".