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139628 = 2267521
BaseRepresentation
bin100010000101101100
321002112102
4202011230
513432003
62554232
71121036
oct420554
9232472
10139628
11959a5
1268978
134b728
1438c56
152b588
hex2216c

139628 has 12 divisors (see below), whose sum is σ = 248472. Its totient is φ = 68640.

The previous prime is 139627. The next prime is 139661. The reversal of 139628 is 826931.

It is a self number, because there is not a number n which added to its sum of digits gives 139628.

It is not an unprimeable number, because it can be changed into a prime (139627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8 + ... + 528.

It is an arithmetic number, because the mean of its divisors is an integer number (20706).

2139628 is an apocalyptic number.

It is an amenable number.

139628 is a deficient number, since it is larger than the sum of its proper divisors (108844).

139628 is a wasteful number, since it uses less digits than its factorization.

139628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592 (or 590 counting only the distinct ones).

The product of its digits is 2592, while the sum is 29.

The square root of 139628 is about 373.6683021076. The cubic root of 139628 is about 51.8789095616.

It can be divided in two parts, 139 and 628, that added together give a palindrome (767).

The spelling of 139628 in words is "one hundred thirty-nine thousand, six hundred twenty-eight".

Divisors: 1 2 4 67 134 268 521 1042 2084 34907 69814 139628