2478428240 has 40 divisors (see below), whose sum is σ = 5843518848. Its totient is φ = 977406080.

The previous prime is 2478428233. The next prime is 2478428243. The reversal of 2478428240 is 428248742.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×2478428240² = 12285213081658995200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2478428243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212492 + ... + 223851.

Almost surely, 2^2478428240 is an apocalyptic number.

2478428240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2478428240 is an abundant number, since it is smaller than the sum of its proper divisors (3365090608).

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

2478428240 is a wasteful number, since it uses less digits than its factorization.

2478428240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436427 (or 436421 counting only the distinct ones).

The product of its (nonzero) digits is 229376, while the sum is 41.

The square root of 2478428240 is about 49783.8150406334. The cubic root of 2478428240 is about 1353.2938753221.

The spelling of 2478428240 in words is "two billion, four hundred seventy-eight million, four hundred twenty-eight thousand, two hundred forty".