85944780 has 48 divisors (see below), whose sum is σ = 267385440. Its totient is φ = 22918464.

The previous prime is 85944779. The next prime is 85944797. The reversal of 85944780 is 8744958.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 79039 + ... + 80118.

It is an arithmetic number, because the mean of its divisors is an integer number (5570530).

Almost surely, 2^85944780 is an apocalyptic number.

It is an amenable number.

85944780 is an abundant number, since it is smaller than the sum of its proper divisors (181440660).

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

85944780 is a wasteful number, since it uses less digits than its factorization.

85944780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159175 (or 159167 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 85944780 is about 9270.6407545541. The cubic root of 85944780 is about 441.3060026237.

The spelling of 85944780 in words is "eighty-five million, nine hundred forty-four thousand, seven hundred eighty".