478153640 has 64 divisors (see below), whose sum is σ = 1090132560. Its totient is φ = 188743680.

The previous prime is 478153633. The next prime is 478153649. The reversal of 478153640 is 46351874.

It can be written as a sum of positive squares in 8 ways, for example, as 356227876 + 121925764 = 18874^2 + 11042^2 .

It is a junction number, because it is equal to n+sod(n) for n = 478153594 and 478153603.

It is not an unprimeable number, because it can be changed into a prime (478153649) 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, 1860392 + ... + 1860648.

Almost surely, 2^478153640 is an apocalyptic number.

478153640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

478153640 is an abundant number, since it is smaller than the sum of its proper divisors (611978920).

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

478153640 is a wasteful number, since it uses less digits than its factorization.

478153640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702 (or 698 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 478153640 is about 21866.7244917935. The cubic root of 478153640 is about 781.9683139417.

The spelling of 478153640 in words is "four hundred seventy-eight million, one hundred fifty-three thousand, six hundred forty".