1540476040 has 16 divisors (see below), whose sum is σ = 3466071180. Its totient is φ = 616190400.

The previous prime is 1540476031. The next prime is 1540476071. The reversal of 1540476040 is 406740451.

It can be written as a sum of positive squares in 2 ways, for example, as 1505595204 + 34880836 = 38802^2 + 5906^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1540475993 and 1540476011.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19255911 + ... + 19255990.

Almost surely, 2^1540476040 is an apocalyptic number.

1540476040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1540476040 is an abundant number, since it is smaller than the sum of its proper divisors (1925595140).

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

1540476040 is a wasteful number, since it uses less digits than its factorization.

1540476040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38511912 (or 38511908 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 1540476040 is about 39248.8985832724. The cubic root of 1540476040 is about 1154.9193274614.

The spelling of 1540476040 in words is "one billion, five hundred forty million, four hundred seventy-six thousand, forty".