1540604 has 36 divisors (see below), whose sum is σ = 3043656. Its totient is φ = 681408.

The previous prime is 1540603. The next prime is 1540619. The reversal of 1540604 is 4060451.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29042 + ... + 29094.

It is an arithmetic number, because the mean of its divisors is an integer number (84546).

2^1540604 is an apocalyptic number.

It is an amenable number.

1540604 is a deficient number, since it is larger than the sum of its proper divisors (1503052).

1540604 is a wasteful number, since it uses less digits than its factorization.

1540604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1540604 is about 1241.2106992771. The cubic root of 1540604 is about 115.4951304457.

The spelling of 1540604 in words is "one million, five hundred forty thousand, six hundred four".