139526740 has 96 divisors (see below), whose sum is σ = 320060160. Its totient is φ = 50958336.

The previous prime is 139526713. The next prime is 139526759. The reversal of 139526740 is 47625931.

It is a super-2 number, since 2×139526740² = 38935422350055200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 139526740.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1438372 + ... + 1438468.

It is an arithmetic number, because the mean of its divisors is an integer number (3333960).

Almost surely, 2^139526740 is an apocalyptic number.

139526740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139526740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160030080).

139526740 is an abundant number, since it is smaller than the sum of its proper divisors (180533420).

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

139526740 is a wasteful number, since it uses less digits than its factorization.

139526740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 139526740 is about 11812.1437512418. The cubic root of 139526740 is about 518.6636544727.

The spelling of 139526740 in words is "one hundred thirty-nine million, five hundred twenty-six thousand, seven hundred forty".