139525248 has 64 divisors (see below), whose sum is σ = 373662720. Its totient is φ = 46126080.

The previous prime is 139525247. The next prime is 139525249. The reversal of 139525248 is 842525931.

It is an interprime number because it is at equal distance from previous prime (139525247) and next prime (139525249).

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139525247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47338 + ... + 50198.

It is an arithmetic number, because the mean of its divisors is an integer number (5838480).

Almost surely, 2^139525248 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 139525248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186831360).

139525248 is an abundant number, since it is smaller than the sum of its proper divisors (234137472).

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

139525248 is a wasteful number, since it uses less digits than its factorization.

139525248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3005 (or 2993 counting only the distinct ones).

The product of its digits is 86400, while the sum is 39.

The square root of 139525248 is about 11812.0805957291. The cubic root of 139525248 is about 518.6618057257.

The spelling of 139525248 in words is "one hundred thirty-nine million, five hundred twenty-five thousand, two hundred forty-eight".