139668480 has 264 divisors, whose sum is σ = 554360352. Its totient is φ = 31850496.

The previous prime is 139668479. The next prime is 139668511. The reversal of 139668480 is 84866931.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 322344 + ... + 322776.

Almost surely, 2^139668480 is an apocalyptic number.

139668480 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 139668480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277180176).

139668480 is an abundant number, since it is smaller than the sum of its proper divisors (414691872).

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

139668480 is a wasteful number, since it uses less digits than its factorization.

139668480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471 (or 450 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 139668480 is about 11818.1419859469. The cubic root of 139668480 is about 518.8392253742.

The spelling of 139668480 in words is "one hundred thirty-nine million, six hundred sixty-eight thousand, four hundred eighty".