2478530 has 8 divisors (see below), whose sum is σ = 4461372. Its totient is φ = 991408.

The previous prime is 2478529. The next prime is 2478547. The reversal of 2478530 is 358742.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2301289 + 177241 = 1517^2 + 421^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2478530² = 12286221921800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2478493 and 2478502.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123917 + ... + 123936.

2^2478530 is an apocalyptic number.

2478530 is a deficient number, since it is larger than the sum of its proper divisors (1982842).

2478530 is a wasteful number, since it uses less digits than its factorization.

2478530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247860.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 2478530 is about 1574.3347801532. The cubic root of 2478530 is about 135.3312396375.

The spelling of 2478530 in words is "two million, four hundred seventy-eight thousand, five hundred thirty".