478836240 has 80 divisors (see below), whose sum is σ = 1524539328. Its totient is φ = 124236288.

The previous prime is 478836227. The next prime is 478836247. The reversal of 478836240 is 42638874.

It is a tau number, because it is divible by the number of its divisors (80).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 478836192 and 478836201.

It is not an unprimeable number, because it can be changed into a prime (478836247) 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, 18082 + ... + 35841.

Almost surely, 2^478836240 is an apocalyptic number.

478836240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

478836240 is an abundant number, since it is smaller than the sum of its proper divisors (1045703088).

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

478836240 is a wasteful number, since it uses less digits than its factorization.

478836240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53976 (or 53970 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 42.

The square root of 478836240 is about 21882.3271157343. The cubic root of 478836240 is about 782.3402430513.

The spelling of 478836240 in words is "four hundred seventy-eight million, eight hundred thirty-six thousand, two hundred forty".