1540072 has 16 divisors (see below), whose sum is σ = 2901600. Its totient is φ = 766320.

The previous prime is 1540039. The next prime is 1540073. The reversal of 1540072 is 2700451.

It is not an unprimeable number, because it can be changed into a prime (1540073) 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, 2179 + ... + 2797.

It is an arithmetic number, because the mean of its divisors is an integer number (181350).

2^1540072 is an apocalyptic number.

It is an amenable number.

1540072 is a deficient number, since it is larger than the sum of its proper divisors (1361528).

1540072 is a wasteful number, since it uses less digits than its factorization.

1540072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936 (or 932 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 1540072 is about 1240.9963738867. The cubic root of 1540072 is about 115.4818346900.

The spelling of 1540072 in words is "one million, five hundred forty thousand, seventy-two".