478269990 has 96 divisors (see below), whose sum is σ = 1360509696. Its totient is φ = 115606080.

The previous prime is 478269983. The next prime is 478270003. The reversal of 478269990 is 99962874.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 580719 + ... + 581541.

It is an arithmetic number, because the mean of its divisors is an integer number (14171976).

Almost surely, 2^478269990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 478269990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (680254848).

478269990 is an abundant number, since it is smaller than the sum of its proper divisors (882239706).

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

478269990 is a wasteful number, since it uses less digits than its factorization.

478269990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434 (or 1431 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The square root of 478269990 is about 21869.3847650088. The cubic root of 478269990 is about 782.0317347247.

The spelling of 478269990 in words is "four hundred seventy-eight million, two hundred sixty-nine thousand, nine hundred ninety".