85390740 has 96 divisors (see below), whose sum is σ = 274283520. Its totient is φ = 22032000.

The previous prime is 85390729. The next prime is 85390757. The reversal of 85390740 is 4709358.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 85390695 and 85390704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14190 + ... + 19290.

It is an arithmetic number, because the mean of its divisors is an integer number (2857120).

Almost surely, 2^85390740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85390740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137141760).

85390740 is an abundant number, since it is smaller than the sum of its proper divisors (188892780).

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

85390740 is a wasteful number, since it uses less digits than its factorization.

85390740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5150 (or 5142 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 85390740 is about 9240.7110116051. The cubic root of 85390740 is about 440.3556697206.

The spelling of 85390740 in words is "eighty-five million, three hundred ninety thousand, seven hundred forty".