140887440 has 60 divisors (see below), whose sum is σ = 473149404. Its totient is φ = 37569792.

The previous prime is 140887433. The next prime is 140887459. The reversal of 140887440 is 44788041.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17943696 + 122943744 = 4236^2 + 11088^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 140887395 and 140887404.

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 11 ways as a sum of consecutive naturals, for example, 97119 + ... + 98558.

Almost surely, 2^140887440 is an apocalyptic number.

140887440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140887440 is an abundant number, since it is smaller than the sum of its proper divisors (332261964).

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

140887440 is a wasteful number, since it uses less digits than its factorization.

140887440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195696 (or 195687 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The square root of 140887440 is about 11869.6015097391. The cubic root of 140887440 is about 520.3442493680.

It can be divided in two parts, 14088 and 7440, that added together give a triangular number (21528 = T₂₀₇).

The spelling of 140887440 in words is "one hundred forty million, eight hundred eighty-seven thousand, four hundred forty".