140622978 has 32 divisors (see below), whose sum is σ = 284653440. Its totient is φ = 46310400.

The previous prime is 140622961. The next prime is 140623003. The reversal of 140622978 is 879226041.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243426 + ... + 244002.

It is an arithmetic number, because the mean of its divisors is an integer number (8895420).

Almost surely, 2^140622978 is an apocalyptic number.

140622978 is an abundant number, since it is smaller than the sum of its proper divisors (144030462).

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

140622978 is a wasteful number, since it uses less digits than its factorization.

140622978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 140622978 is about 11858.4559703192. The cubic root of 140622978 is about 520.0184633484.

The spelling of 140622978 in words is "one hundred forty million, six hundred twenty-two thousand, nine hundred seventy-eight".