2130478 has 16 divisors (see below), whose sum is σ = 3738240. Its totient is φ = 891576.

The previous prime is 2130473. The next prime is 2130493. The reversal of 2130478 is 8740312.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130473) 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 7 ways as a sum of consecutive naturals, for example, 1168 + ... + 2371.

It is an arithmetic number, because the mean of its divisors is an integer number (233640).

2^2130478 is an apocalyptic number.

2130478 is a deficient number, since it is larger than the sum of its proper divisors (1607762).

2130478 is a wasteful number, since it uses less digits than its factorization.

2130478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3591.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 2130478 is about 1459.6157028478. The cubic root of 2130478 is about 128.6744590960.

The spelling of 2130478 in words is "two million, one hundred thirty thousand, four hundred seventy-eight".