129730814 has 4 divisors (see below), whose sum is σ = 194596224. Its totient is φ = 64865406.

The previous prime is 129730813. The next prime is 129730823. The reversal of 129730814 is 418037921.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×129730814² = 33660168202205192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129730813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32432702 + ... + 32432705.

It is an arithmetic number, because the mean of its divisors is an integer number (48649056).

Almost surely, 2^129730814 is an apocalyptic number.

129730814 is a deficient number, since it is larger than the sum of its proper divisors (64865410).

129730814 is an equidigital number, since it uses as much as digits as its factorization.

129730814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64865409.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 129730814 is about 11389.9435468311. The cubic root of 129730814 is about 506.2298085937.

The spelling of 129730814 in words is "one hundred twenty-nine million, seven hundred thirty thousand, eight hundred fourteen".