139087248 has 80 divisors (see below), whose sum is σ = 374589120. Its totient is φ = 44416512.

The previous prime is 139087229. The next prime is 139087283. The reversal of 139087248 is 842780931.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226590 + ... + 227202.

It is an arithmetic number, because the mean of its divisors is an integer number (4682364).

Almost surely, 2^139087248 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 139087248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187294560).

139087248 is an abundant number, since it is smaller than the sum of its proper divisors (235501872).

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

139087248 is a wasteful number, since it uses less digits than its factorization.

139087248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816 (or 810 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 139087248 is about 11793.5256814915. The cubic root of 139087248 is about 518.1185062019.

The spelling of 139087248 in words is "one hundred thirty-nine million, eighty-seven thousand, two hundred forty-eight".