1406035640 has 32 divisors (see below), whose sum is σ = 3193156080. Its totient is φ = 557156352.

The previous prime is 1406035639. The next prime is 1406035679. The reversal of 1406035640 is 465306041.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159977 + ... + 168536.

Almost surely, 2^1406035640 is an apocalyptic number.

1406035640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1406035640 is an abundant number, since it is smaller than the sum of its proper divisors (1787120440).

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

1406035640 is a wasteful number, since it uses less digits than its factorization.

1406035640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328631 (or 328627 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1406035640 is about 37497.1417577393. The cubic root of 1406035640 is about 1120.2942572919.

The spelling of 1406035640 in words is "one billion, four hundred six million, thirty-five thousand, six hundred forty".