85148988 has 96 divisors (see below), whose sum is σ = 224078400. Its totient is φ = 25030656.

The previous prime is 85148963. The next prime is 85149041. The reversal of 85148988 is 88984158.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 85148988.

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, 218698 + ... + 219086.

It is an arithmetic number, because the mean of its divisors is an integer number (2334150).

Almost surely, 2^85148988 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 85148988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112039200).

85148988 is an abundant number, since it is smaller than the sum of its proper divisors (138929412).

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

85148988 is a wasteful number, since it uses less digits than its factorization.

85148988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479 (or 477 counting only the distinct ones).

The product of its digits is 737280, while the sum is 51.

The square root of 85148988 is about 9227.6209284951. The cubic root of 85148988 is about 439.9397093700.

The spelling of 85148988 in words is "eighty-five million, one hundred forty-eight thousand, nine hundred eighty-eight".