78130250 has 32 divisors (see below), whose sum is σ = 159561792. Its totient is φ = 28410000.

The previous prime is 78130237. The next prime is 78130271. The reversal of 78130250 is 5203187.

It is a super-2 number, since 2×78130250² = 12208671930125000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11456 + ... + 16955.

It is an arithmetic number, because the mean of its divisors is an integer number (4986306).

Almost surely, 2^78130250 is an apocalyptic number.

78130250 is an abundant number, since it is smaller than the sum of its proper divisors (81431542).

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

78130250 is a wasteful number, since it uses less digits than its factorization.

78130250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28439 (or 28429 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 78130250 is about 8839.1317446908. The cubic root of 78130250 is about 427.5035623200.

The spelling of 78130250 in words is "seventy-eight million, one hundred thirty thousand, two hundred fifty".