738172806 has 64 divisors (see below), whose sum is σ = 1748238336. Its totient is φ = 203335200.

The previous prime is 738172783. The next prime is 738172811. The reversal of 738172806 is 608271837.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent 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, 404011 + ... + 405833.

It is an arithmetic number, because the mean of its divisors is an integer number (27316224).

Almost surely, 2^738172806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 738172806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (874119168).

738172806 is an abundant number, since it is smaller than the sum of its proper divisors (1010065530).

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

738172806 is a wasteful number, since it uses less digits than its factorization.

738172806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2177.

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 738172806 is about 27169.3357666322. The cubic root of 738172806 is about 903.7590945445.

The spelling of 738172806 in words is "seven hundred thirty-eight million, one hundred seventy-two thousand, eight hundred six".