139580028 has 108 divisors (see below), whose sum is σ = 416910312. Its totient is φ = 39251520.

The previous prime is 139579981. The next prime is 139580029. The reversal of 139580028 is 820085931.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 139579974 and 139580001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139580029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 117598 + ... + 118778.

Almost surely, 2^139580028 is an apocalyptic number.

139580028 is a gapful number since it is divisible by the number (18) 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 139580028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208455156).

139580028 is an abundant number, since it is smaller than the sum of its proper divisors (277330284).

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

139580028 is a wasteful number, since it uses less digits than its factorization.

139580028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272 (or 1260 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 139580028 is about 11814.3991806609. The cubic root of 139580028 is about 518.7296753444.

The spelling of 139580028 in words is "one hundred thirty-nine million, five hundred eighty thousand, twenty-eight".