139228800 has 96 divisors (see below), whose sum is σ = 458616480. Its totient is φ = 37125120.

The previous prime is 139228783. The next prime is 139228801. The reversal of 139228800 is 8822931.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (139228801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2349 + ... + 16851.

It is an arithmetic number, because the mean of its divisors is an integer number (4777255).

Almost surely, 2^139228800 is an apocalyptic number.

139228800 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 139228800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229308240).

139228800 is an abundant number, since it is smaller than the sum of its proper divisors (319387680).

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

139228800 is a wasteful number, since it uses less digits than its factorization.

139228800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14530 (or 14513 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 139228800 is about 11799.5254141851. The cubic root of 139228800 is about 518.2942132870.

It can be divided in two parts, 13922 and 8800, that added together give a palindrome (22722).

The spelling of 139228800 in words is "one hundred thirty-nine million, two hundred twenty-eight thousand, eight hundred".