139298250 has 192 divisors, whose sum is σ = 433016064. Its totient is φ = 29203200.

The previous prime is 139298231. The next prime is 139298273. The reversal of 139298250 is 52892931.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 139298199 and 139298208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 887172 + ... + 887328.

It is an arithmetic number, because the mean of its divisors is an integer number (2255292).

Almost surely, 2^139298250 is an apocalyptic number.

139298250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 139298250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216508032).

139298250 is an abundant number, since it is smaller than the sum of its proper divisors (293717814).

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

139298250 is a wasteful number, since it uses less digits than its factorization.

139298250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 139298250 is about 11802.4679622526. The cubic root of 139298250 is about 518.3803773318.

The spelling of 139298250 in words is "one hundred thirty-nine million, two hundred ninety-eight thousand, two hundred fifty".