140643776 has 224 divisors, whose sum is σ = 382341120. Its totient is φ = 49766400.

The previous prime is 140643773. The next prime is 140643803. The reversal of 140643776 is 677346041.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140643773) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3430316 + ... + 3430356.

It is an arithmetic number, because the mean of its divisors is an integer number (1706880).

Almost surely, 2^140643776 is an apocalyptic number.

140643776 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 140643776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191170560).

140643776 is an abundant number, since it is smaller than the sum of its proper divisors (241697344).

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

140643776 is a wasteful number, since it uses less digits than its factorization.

140643776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 140643776 is about 11859.3328648790. The cubic root of 140643776 is about 520.0440988242.

The spelling of 140643776 in words is "one hundred forty million, six hundred forty-three thousand, seven hundred seventy-six".