139528650 has 24 divisors (see below), whose sum is σ = 346031424. Its totient is φ = 37207600.

The previous prime is 139528643. The next prime is 139528661. The reversal of 139528650 is 56825931.

139528650 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 139528599 and 139528608.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 464946 + ... + 465245.

It is an arithmetic number, because the mean of its divisors is an integer number (14417976).

Almost surely, 2^139528650 is an apocalyptic number.

139528650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139528650 is an abundant number, since it is smaller than the sum of its proper divisors (206502774).

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

139528650 is a wasteful number, since it uses less digits than its factorization.

139528650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930206 (or 930201 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 139528650 is about 11812.2245999642. The cubic root of 139528650 is about 518.6660211470. Note that the first 3 decimals are identical.

The spelling of 139528650 in words is "one hundred thirty-nine million, five hundred twenty-eight thousand, six hundred fifty".