1540232712 has 32 divisors (see below), whose sum is σ = 4278424800. Its totient is φ = 513410832.

The previous prime is 1540232699. The next prime is 1540232719. The reversal of 1540232712 is 2172320451.

It is a super-2 number, since 2×1540232712² = 4744633614229749888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1540232719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3565138 + ... + 3565569.

It is an arithmetic number, because the mean of its divisors is an integer number (133700775).

Almost surely, 2^1540232712 is an apocalyptic number.

1540232712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1540232712 is an abundant number, since it is smaller than the sum of its proper divisors (2738192088).

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

1540232712 is a wasteful number, since it uses less digits than its factorization.

1540232712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7130722 (or 7130712 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 1540232712 is about 39245.7986541235. The cubic root of 1540232712 is about 1154.8585153054.

The spelling of 1540232712 in words is "one billion, five hundred forty million, two hundred thirty-two thousand, seven hundred twelve".