148638 has 16 divisors (see below), whose sum is σ = 339840. Its totient is φ = 42456.

The previous prime is 148633. The next prime is 148639. The reversal of 148638 is 836841.

It is a happy number.

It is an Ulam number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148633) by changing a digit.

148638 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1728 + ... + 1811.

It is an arithmetic number, because the mean of its divisors is an integer number (21240).

2¹⁴⁸⁶³⁸ is an apocalyptic number.

148638 is an abundant number, since it is smaller than the sum of its proper divisors (191202).

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

148638 is a wasteful number, since it uses less digits than its factorization.

148638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3551.

The product of its digits is 4608, while the sum is 30.

The square root of 148638 is about 385.5359905378. The cubic root of 148638 is about 52.9716235900.

The spelling of 148638 in words is "one hundred forty-eight thousand, six hundred thirty-eight".