139333530 has 128 divisors (see below), whose sum is σ = 418037760. Its totient is φ = 28984320.

The previous prime is 139333507. The next prime is 139333531. The reversal of 139333530 is 35333931.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (139333531) 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 63 ways as a sum of consecutive naturals, for example, 110041 + ... + 111299.

It is an arithmetic number, because the mean of its divisors is an integer number (3265920).

Almost surely, 2^139333530 is an apocalyptic number.

139333530 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 139333530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209018880).

139333530 is an abundant number, since it is smaller than the sum of its proper divisors (278704230).

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

139333530 is a wasteful number, since it uses less digits than its factorization.

139333530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324.

The product of its (nonzero) digits is 10935, while the sum is 30.

The square root of 139333530 is about 11803.9624702894. The cubic root of 139333530 is about 518.4241369530.

The spelling of 139333530 in words is "one hundred thirty-nine million, three hundred thirty-three thousand, five hundred thirty".