87439254 has 96 divisors (see below), whose sum is σ = 216529920. Its totient is φ = 23048064.

The previous prime is 87439249. The next prime is 87439301. The reversal of 87439254 is 45293478.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1106787 + ... + 1106865.

It is an arithmetic number, because the mean of its divisors is an integer number (2255520).

Almost surely, 2^87439254 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87439254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108264960).

87439254 is an abundant number, since it is smaller than the sum of its proper divisors (129090666).

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

87439254 is a wasteful number, since it uses less digits than its factorization.

87439254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202 (or 183 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The square root of 87439254 is about 9350.8958929078. The cubic root of 87439254 is about 443.8492406752.

The spelling of 87439254 in words is "eighty-seven million, four hundred thirty-nine thousand, two hundred fifty-four".