130806502 has 4 divisors (see below), whose sum is σ = 196209756. Its totient is φ = 65403250.

The previous prime is 130806479. The next prime is 130806527. The reversal of 130806502 is 205608031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 205608031 = 307 ⋅669733.

It is a super-2 number, since 2×130806502² = 34220681930952008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32701624 + ... + 32701627.

It is an arithmetic number, because the mean of its divisors is an integer number (49052439).

Almost surely, 2^130806502 is an apocalyptic number.

130806502 is a deficient number, since it is larger than the sum of its proper divisors (65403254).

130806502 is an equidigital number, since it uses as much as digits as its factorization.

130806502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65403253.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 130806502 is about 11437.0670191269. The cubic root of 130806502 is about 507.6251264346.

The spelling of 130806502 in words is "one hundred thirty million, eight hundred six thousand, five hundred two".