1540992 has 32 divisors (see below), whose sum is σ = 4094280. Its totient is φ = 513536.

The previous prime is 1540969. The next prime is 1540997. The reversal of 1540992 is 2990451.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1623 + ... + 2390.

2^1540992 is an apocalyptic number.

1540992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1540992 is an abundant number, since it is smaller than the sum of its proper divisors (2553288).

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

1540992 is an equidigital number, since it uses as much as digits as its factorization.

1540992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4030 (or 4018 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 1540992 is about 1241.3669884446. The cubic root of 1540992 is about 115.5048254201.

The spelling of 1540992 in words is "one million, five hundred forty thousand, nine hundred ninety-two".