140506816 has 56 divisors (see below), whose sum is σ = 296594784. Its totient is φ = 65894400.

The previous prime is 140506813. The next prime is 140506837. The reversal of 140506816 is 618605041.

It is not an unprimeable number, because it can be changed into a prime (140506811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77116 + ... + 78916.

Almost surely, 2^140506816 is an apocalyptic number.

140506816 is a gapful number since it is divisible by the number (16) 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 140506816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148297392).

140506816 is an abundant number, since it is smaller than the sum of its proper divisors (156087968).

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

140506816 is a wasteful number, since it uses less digits than its factorization.

140506816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889 (or 1879 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 140506816 is about 11853.5571032496. The cubic root of 140506816 is about 519.8752363400.

The spelling of 140506816 in words is "one hundred forty million, five hundred six thousand, eight hundred sixteen".