139412880 has 320 divisors, whose sum is σ = 523776000. Its totient is φ = 33965568.

The previous prime is 139412879. The next prime is 139412909. The reversal of 139412880 is 88214931.

It is a super-2 number, since 2×139412880² = 38871902219788800, which contains 22 as substring.

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

It is a zygodrome in base 7.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1764681 + ... + 1764759.

It is an arithmetic number, because the mean of its divisors is an integer number (1636800).

Almost surely, 2^139412880 is an apocalyptic number.

139412880 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 139412880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261888000).

139412880 is an abundant number, since it is smaller than the sum of its proper divisors (384363120).

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

139412880 is a wasteful number, since it uses less digits than its factorization.

139412880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 151 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 139412880 is about 11807.3231513328. The cubic root of 139412880 is about 518.5225319065.

The spelling of 139412880 in words is "one hundred thirty-nine million, four hundred twelve thousand, eight hundred eighty".