130778526 has 16 divisors (see below), whose sum is σ = 261671184. Its totient is φ = 43573824.

The previous prime is 130778519. The next prime is 130778597. The reversal of 130778526 is 625877031.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20290 + ... + 25946.

It is an arithmetic number, because the mean of its divisors is an integer number (16354449).

Almost surely, 2^130778526 is an apocalyptic number.

130778526 is an abundant number, since it is smaller than the sum of its proper divisors (130892658).

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

130778526 is a wasteful number, since it uses less digits than its factorization.

130778526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9515.

The product of its (nonzero) digits is 70560, while the sum is 39.

The square root of 130778526 is about 11435.8439128907. The cubic root of 130778526 is about 507.5889347243.

The spelling of 130778526 in words is "one hundred thirty million, seven hundred seventy-eight thousand, five hundred twenty-six".