85237280 has 24 divisors (see below), whose sum is σ = 201373452. Its totient is φ = 34094848.

The previous prime is 85237277. The next prime is 85237297. The reversal of 85237280 is 8273258.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 82664464 + 2572816 = 9092^2 + 1604^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 85237280.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266207 + ... + 266526.

Almost surely, 2^85237280 is an apocalyptic number.

85237280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

85237280 is an abundant number, since it is smaller than the sum of its proper divisors (116136172).

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

85237280 is a wasteful number, since it uses less digits than its factorization.

85237280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532748 (or 532740 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 85237280 is about 9232.4038039938. The cubic root of 85237280 is about 440.0917164179.

The spelling of 85237280 in words is "eighty-five million, two hundred thirty-seven thousand, two hundred eighty".