1540070 has 32 divisors (see below), whose sum is σ = 3240000. Its totient is φ = 526848.

The previous prime is 1540039. The next prime is 1540073. The reversal of 1540070 is 700451.

It is a happy number.

It is a Curzon number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 3206 + ... + 3654.

It is an arithmetic number, because the mean of its divisors is an integer number (101250).

2^1540070 is an apocalyptic number.

1540070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1540070 is an abundant number, since it is smaller than the sum of its proper divisors (1699930).

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

1540070 is an equidigital number, since it uses as much as digits as its factorization.

1540070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477 (or 463 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 1540070 is about 1240.9955680823. The cubic root of 1540070 is about 115.4817847001.

The spelling of 1540070 in words is "one million, five hundred forty thousand, seventy".