478242738 has 32 divisors (see below), whose sum is σ = 1066216320. Its totient is φ = 158896080.

The previous prime is 478242733. The next prime is 478242769. The reversal of 478242738 is 837242874.

It is a super-2 number, since 2×478242738² = 457432232899473288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 478242693 and 478242702.

It is not an unprimeable number, because it can be changed into a prime (478242733) 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, 2556 + ... + 31032.

It is an arithmetic number, because the mean of its divisors is an integer number (33319260).

Almost surely, 2^478242738 is an apocalyptic number.

478242738 is an abundant number, since it is smaller than the sum of its proper divisors (587973582).

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

478242738 is a wasteful number, since it uses less digits than its factorization.

478242738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28799 (or 28793 counting only the distinct ones).

The product of its digits is 602112, while the sum is 45.

The square root of 478242738 is about 21868.7616933378. The cubic root of 478242738 is about 782.0168809572.

It can be divided in two parts, 478242 and 738, that multiplied together give a triangular number (352942596 = T₂₆₅₆₈).

The spelling of 478242738 in words is "four hundred seventy-eight million, two hundred forty-two thousand, seven hundred thirty-eight".