7328031906 has 64 divisors (see below), whose sum is σ = 16410562560. Its totient is φ = 2166246720.

The previous prime is 7328031889. The next prime is 7328031911. The reversal of 7328031906 is 6091308237.

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

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, 325201 + ... + 347003.

It is an arithmetic number, because the mean of its divisors is an integer number (256415040).

Almost surely, 2^7328031906 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7328031906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8205281280).

7328031906 is an abundant number, since it is smaller than the sum of its proper divisors (9082530654).

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

7328031906 is a wasteful number, since it uses less digits than its factorization.

7328031906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21991.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 7328031906 is about 85603.9245946119. The cubic root of 7328031906 is about 1942.3572778337.

The spelling of 7328031906 in words is "seven billion, three hundred twenty-eight million, thirty-one thousand, nine hundred six".