148239738 has 48 divisors (see below), whose sum is σ = 336937536. Its totient is φ = 47013120.

The previous prime is 148239727. The next prime is 148239757. The reversal of 148239738 is 837932841.

It is a junction number, because it is equal to n+sod(n) for n = 148239693 and 148239702.

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 23 ways as a sum of consecutive naturals, for example, 86506 + ... + 88202.

It is an arithmetic number, because the mean of its divisors is an integer number (7019532).

Almost surely, 2^148239738 is an apocalyptic number.

148239738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 148239738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168468768).

148239738 is an abundant number, since it is smaller than the sum of its proper divisors (188697798).

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

148239738 is a wasteful number, since it uses less digits than its factorization.

148239738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939 (or 1936 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 148239738 is about 12175.3742447614. The cubic root of 148239738 is about 529.2427038964.

The spelling of 148239738 in words is "one hundred forty-eight million, two hundred thirty-nine thousand, seven hundred thirty-eight".