140537780 has 24 divisors (see below), whose sum is σ = 296620800. Its totient is φ = 55931040.

The previous prime is 140537777. The next prime is 140537801. The reversal of 140537780 is 87735041.

It is a self number, because there is not a number n which added to its sum of digits gives 140537780.

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, 13676 + ... + 21635.

It is an arithmetic number, because the mean of its divisors is an integer number (12359200).

Almost surely, 2^140537780 is an apocalyptic number.

140537780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140537780 is an abundant number, since it is smaller than the sum of its proper divisors (156083020).

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

140537780 is a wasteful number, since it uses less digits than its factorization.

140537780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35519 (or 35517 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 140537780 is about 11854.8631371265. The cubic root of 140537780 is about 519.9134224697.

The spelling of 140537780 in words is "one hundred forty million, five hundred thirty-seven thousand, seven hundred eighty".