85729452 has 24 divisors (see below), whose sum is σ = 206934000. Its totient is φ = 27590976.

The previous prime is 85729439. The next prime is 85729471. The reversal of 85729452 is 25492758.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122827 + ... + 123522.

It is an arithmetic number, because the mean of its divisors is an integer number (8622250).

Almost surely, 2^85729452 is an apocalyptic number.

It is an amenable number.

85729452 is an abundant number, since it is smaller than the sum of its proper divisors (121204548).

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

85729452 is a wasteful number, since it uses less digits than its factorization.

85729452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246385 (or 246383 counting only the distinct ones).

The product of its digits is 201600, while the sum is 42.

The square root of 85729452 is about 9259.0200345393. The cubic root of 85729452 is about 440.9371417137.

The spelling of 85729452 in words is "eighty-five million, seven hundred twenty-nine thousand, four hundred fifty-two".