139778016 has 48 divisors (see below), whose sum is σ = 419336064. Its totient is φ = 39936384.

The previous prime is 139777997. The next prime is 139778027. The reversal of 139778016 is 610877931.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103330 + ... + 104673.

It is an arithmetic number, because the mean of its divisors is an integer number (8736168).

Almost surely, 2^139778016 is an apocalyptic number.

139778016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

139778016 is an abundant number, since it is smaller than the sum of its proper divisors (279558048).

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

139778016 is a wasteful number, since it uses less digits than its factorization.

139778016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208023 (or 208015 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 139778016 is about 11822.7753086997. The cubic root of 139778016 is about 518.9748243846.

The spelling of 139778016 in words is "one hundred thirty-nine million, seven hundred seventy-eight thousand, sixteen".