478666692 has 144 divisors (see below), whose sum is σ = 1493856000. Its totient is φ = 132003648.

The previous prime is 478666681. The next prime is 478666703. The reversal of 478666692 is 296666874.

It is an interprime number because it is at equal distance from previous prime (478666681) and next prime (478666703).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 151909 + ... + 155027.

It is an arithmetic number, because the mean of its divisors is an integer number (10374000).

Almost surely, 2^478666692 is an apocalyptic number.

478666692 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 478666692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (746928000).

478666692 is an abundant number, since it is smaller than the sum of its proper divisors (1015189308).

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

478666692 is a wasteful number, since it uses less digits than its factorization.

478666692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3175 (or 3160 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 54.

The square root of 478666692 is about 21878.4526875188. The cubic root of 478666692 is about 782.2478942333.

The spelling of 478666692 in words is "four hundred seventy-eight million, six hundred sixty-six thousand, six hundred ninety-two".