85424780 has 48 divisors (see below), whose sum is σ = 205556736. Its totient is φ = 29211840.

The previous prime is 85424753. The next prime is 85424797. The reversal of 85424780 is 8742458.

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, 87857 + ... + 88823.

It is an arithmetic number, because the mean of its divisors is an integer number (4282432).

Almost surely, 2^85424780 is an apocalyptic number.

It is an amenable number.

85424780 is an abundant number, since it is smaller than the sum of its proper divisors (120131956).

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

85424780 is a wasteful number, since it uses less digits than its factorization.

85424780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614 (or 1612 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 38.

The square root of 85424780 is about 9242.5526776968. The cubic root of 85424780 is about 440.4141761255.

The spelling of 85424780 in words is "eighty-five million, four hundred twenty-four thousand, seven hundred eighty".