84257250 has 128 divisors (see below), whose sum is σ = 262379520. Its totient is φ = 17496000.

The previous prime is 84257249. The next prime is 84257263. The reversal of 84257250 is 5275248.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 57021 + ... + 58479.

It is an arithmetic number, because the mean of its divisors is an integer number (2049840).

Almost surely, 2^84257250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84257250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131189760).

84257250 is an abundant number, since it is smaller than the sum of its proper divisors (178122270).

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

84257250 is a wasteful number, since it uses less digits than its factorization.

84257250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497 (or 1487 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 84257250 is about 9179.1747995122. The cubic root of 84257250 is about 438.3985342859.

The spelling of 84257250 in words is "eighty-four million, two hundred fifty-seven thousand, two hundred fifty".