734508138 has 72 divisors (see below), whose sum is σ = 1850542848. Its totient is φ = 193703328.

The previous prime is 734508121. The next prime is 734508157. The reversal of 734508138 is 831805437.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 734508096 and 734508105.

It is a congruent number.

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 35 ways as a sum of consecutive naturals, for example, 42295 + ... + 57077.

It is an arithmetic number, because the mean of its divisors is an integer number (25701984).

Almost surely, 2^734508138 is an apocalyptic number.

734508138 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 734508138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (925271424).

734508138 is an abundant number, since it is smaller than the sum of its proper divisors (1116034710).

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

734508138 is a wasteful number, since it uses less digits than its factorization.

734508138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14828 (or 14808 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 734508138 is about 27101.8106037217. The cubic root of 734508138 is about 902.2610383727.

The spelling of 734508138 in words is "seven hundred thirty-four million, five hundred eight thousand, one hundred thirty-eight".