1540632 has 32 divisors (see below), whose sum is σ = 4020480. Its totient is φ = 491040.

The previous prime is 1540631. The next prime is 1540639. The reversal of 1540632 is 2360451.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1540599 and 1540608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540631) 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, 844 + ... + 1947.

It is an arithmetic number, because the mean of its divisors is an integer number (125640).

2^1540632 is an apocalyptic number.

1540632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1540632 is an abundant number, since it is smaller than the sum of its proper divisors (2479848).

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

1540632 is a wasteful number, since it uses less digits than its factorization.

1540632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2823 (or 2819 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1540632 is about 1241.2219785357. The cubic root of 1540632 is about 115.4958301375.

The spelling of 1540632 in words is "one million, five hundred forty thousand, six hundred thirty-two".