1540056 has 64 divisors (see below), whose sum is σ = 4492800. Its totient is φ = 430848.

The previous prime is 1540039. The next prime is 1540073. The reversal of 1540056 is 6500451.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1540039) and next prime (1540073).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14901 + ... + 15003.

It is an arithmetic number, because the mean of its divisors is an integer number (70200).

2^1540056 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 1540056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2246400).

1540056 is an abundant number, since it is smaller than the sum of its proper divisors (2952744).

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

1540056 is a wasteful number, since it uses less digits than its factorization.

1540056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1540056 is about 1240.9899274370. The cubic root of 1540056 is about 115.4814347702.

The spelling of 1540056 in words is "one million, five hundred forty thousand, fifty-six".