129850496 has 16 divisors (see below), whose sum is σ = 258686790. Its totient is φ = 64925184.

The previous prime is 129850451. The next prime is 129850499. The reversal of 129850496 is 694058921.

It can be written as a sum of positive squares in only one way, i.e., 128504896 + 1345600 = 11336^2 + 1160^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×129850496² = 33722302622892032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (129850499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 507101 + ... + 507356.

Almost surely, 2^129850496 is an apocalyptic number.

129850496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

129850496 is a deficient number, since it is larger than the sum of its proper divisors (128836294).

129850496 is an equidigital number, since it uses as much as digits as its factorization.

129850496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014471 (or 1014459 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 129850496 is about 11395.1961808474. The cubic root of 129850496 is about 506.3854333380.

The spelling of 129850496 in words is "one hundred twenty-nine million, eight hundred fifty thousand, four hundred ninety-six".