140280840 has 96 divisors (see below), whose sum is σ = 521052480. Its totient is φ = 32063616.

The previous prime is 140280839. The next prime is 140280851. The reversal of 140280840 is 48082041.

It is a super-2 number, since 2×140280840² = 39357428142211200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25314 + ... + 30353.

It is an arithmetic number, because the mean of its divisors is an integer number (5427630).

Almost surely, 2^140280840 is an apocalyptic number.

140280840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140280840 is an abundant number, since it is smaller than the sum of its proper divisors (380771640).

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

140280840 is a wasteful number, since it uses less digits than its factorization.

140280840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55691 (or 55684 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 140280840 is about 11844.0212765766. The cubic root of 140280840 is about 519.5963830515.

The spelling of 140280840 in words is "one hundred forty million, two hundred eighty thousand, eight hundred forty".