1540616 has 64 divisors (see below), whose sum is σ = 3749760. Its totient is φ = 576000.

The previous prime is 1540603. The next prime is 1540619. The reversal of 1540616 is 6160451.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1540591 and 1540600.

It is not an unprimeable number, because it can be changed into a prime (1540619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25226 + ... + 25286.

It is an arithmetic number, because the mean of its divisors is an integer number (58590).

2^1540616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1540616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1874880).

1540616 is an abundant number, since it is smaller than the sum of its proper divisors (2209144).

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

1540616 is a wasteful number, since it uses less digits than its factorization.

1540616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1540616 is about 1241.2155332576. The cubic root of 1540616 is about 115.4954303146.

The spelling of 1540616 in words is "one million, five hundred forty thousand, six hundred sixteen".