423738 has 64 divisors (see below), whose sum is σ = 1152000. Its totient is φ = 112752.

The previous prime is 423727. The next prime is 423749. The reversal of 423738 is 837324.

It is an interprime number because it is at equal distance from previous prime (423727) and next prime (423749).

It is a Harshad number since it is a multiple of its sum of digits (27).

Its product of digits (4032) is a multiple of the sum of its prime factors (96).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7153 + ... + 7211.

It is an arithmetic number, because the mean of its divisors is an integer number (18000).

2⁴²³⁷³⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (576000).

423738 is an abundant number, since it is smaller than the sum of its proper divisors (728262).

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

423738 is a wasteful number, since it uses less digits than its factorization.

423738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96 (or 90 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 423738 is about 650.9516111049. The cubic root of 423738 is about 75.1102378887.

The spelling of 423738 in words is "four hundred twenty-three thousand, seven hundred thirty-eight".