140274640 has 40 divisors (see below), whose sum is σ = 355789728. Its totient is φ = 51008640.

The previous prime is 140274611. The next prime is 140274727. The reversal of 140274640 is 46472041.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 140274599 and 140274608.

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, 78822 + ... + 80581.

Almost surely, 2^140274640 is an apocalyptic number.

140274640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140274640 is an abundant number, since it is smaller than the sum of its proper divisors (215515088).

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

140274640 is a wasteful number, since it uses less digits than its factorization.

140274640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159427 (or 159421 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 140274640 is about 11843.7595382547. The cubic root of 140274640 is about 519.5887280621.

The spelling of 140274640 in words is "one hundred forty million, two hundred seventy-four thousand, six hundred forty".