139812480 has 384 divisors, whose sum is σ = 534643200. Its totient is φ = 34836480.

The previous prime is 139812467. The next prime is 139812487. The reversal of 139812480 is 84218931.

It is a tau number, because it is divible by the number of its divisors (384).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139812487) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 4510065 + ... + 4510095.

It is an arithmetic number, because the mean of its divisors is an integer number (1392300).

Almost surely, 2^139812480 is an apocalyptic number.

139812480 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 139812480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267321600).

139812480 is an abundant number, since it is smaller than the sum of its proper divisors (394830720).

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

139812480 is an equidigital number, since it uses as much as digits as its factorization.

139812480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 70 counting only the distinct ones).

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

The square root of 139812480 is about 11824.2327446647. The cubic root of 139812480 is about 519.0174741018.

It can be divided in two parts, 13981 and 2480, that added together give a palindrome (16461).

The spelling of 139812480 in words is "one hundred thirty-nine million, eight hundred twelve thousand, four hundred eighty".