85269780 has 48 divisors (see below), whose sum is σ = 265285440. Its totient is φ = 22738464.

The previous prime is 85269749. The next prime is 85269781. The reversal of 85269780 is 8796258.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85269781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78414 + ... + 79493.

It is an arithmetic number, because the mean of its divisors is an integer number (5526780).

Almost surely, 2^85269780 is an apocalyptic number.

It is an amenable number.

85269780 is an abundant number, since it is smaller than the sum of its proper divisors (180015660).

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

85269780 is a wasteful number, since it uses less digits than its factorization.

85269780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157925 (or 157917 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 85269780 is about 9234.1637412383. The cubic root of 85269780 is about 440.1476432898.

The spelling of 85269780 in words is "eighty-five million, two hundred sixty-nine thousand, seven hundred eighty".