139819680 has 576 divisors, whose sum is σ = 647232768. Its totient is φ = 26542080.

The previous prime is 139819657. The next prime is 139819681. The reversal of 139819680 is 86918931.

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

It is not an unprimeable number, because it can be changed into a prime (139819681) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1441392 + ... + 1441488.

It is an arithmetic number, because the mean of its divisors is an integer number (1123668).

Almost surely, 2^139819680 is an apocalyptic number.

139819680 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 139819680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323616384).

139819680 is an abundant number, since it is smaller than the sum of its proper divisors (507413088).

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

139819680 is a wasteful number, since it uses less digits than its factorization.

139819680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 139819680 is about 11824.5372002459. The cubic root of 139819680 is about 519.0263833247.

The spelling of 139819680 in words is "one hundred thirty-nine million, eight hundred nineteen thousand, six hundred eighty".