748638 has 48 divisors (see below), whose sum is σ = 1872000. Its totient is φ = 213840.

The previous prime is 748637. The next prime is 748639. The reversal of 748638 is 836847.

It is an interprime number because it is at equal distance from previous prime (748637) and next prime (748639).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 748638.

It is not an unprimeable number, because it can be changed into a prime (748633) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3663 + ... + 3861.

It is an arithmetic number, because the mean of its divisors is an integer number (39000).

2⁷⁴⁸⁶³⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 748638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (936000).

748638 is an abundant number, since it is smaller than the sum of its proper divisors (1123362).

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

748638 is a wasteful number, since it uses less digits than its factorization.

748638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237 (or 234 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 748638 is about 865.2386953899. The cubic root of 748638 is about 90.8009981325.

Subtracting 748638 from its reverse (836847), we obtain a square (88209 = 297²).

The spelling of 748638 in words is "seven hundred forty-eight thousand, six hundred thirty-eight".