77948286 has 32 divisors (see below), whose sum is σ = 168648480. Its totient is φ = 23875584.

The previous prime is 77948267. The next prime is 77948287. The reversal of 77948286 is 68284977.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77948287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16030 + ... + 20318.

It is an arithmetic number, because the mean of its divisors is an integer number (5270265).

Almost surely, 2^77948286 is an apocalyptic number.

77948286 is an abundant number, since it is smaller than the sum of its proper divisors (90700194).

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

77948286 is a wasteful number, since it uses less digits than its factorization.

77948286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4540.

The product of its digits is 1354752, while the sum is 51.

The square root of 77948286 is about 8828.8326521687. The cubic root of 77948286 is about 427.1714215371.

The spelling of 77948286 in words is "seventy-seven million, nine hundred forty-eight thousand, two hundred eighty-six".