738671990 has 64 divisors (see below), whose sum is σ = 1567157760. Its totient is φ = 245410560.

The previous prime is 738671977. The next prime is 738672007. The reversal of 738671990 is 99176837.

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, 467021 + ... + 468599.

It is an arithmetic number, because the mean of its divisors is an integer number (24486840).

Almost surely, 2^738671990 is an apocalyptic number.

738671990 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

738671990 is an abundant number, since it is smaller than the sum of its proper divisors (828485770).

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

738671990 is a wasteful number, since it uses less digits than its factorization.

738671990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1797.

The product of its (nonzero) digits is 571536, while the sum is 50.

The square root of 738671990 is about 27178.5207470900. The cubic root of 738671990 is about 903.9627688154.

It can be divided in two parts, 73867 and 1990, that added together give a palindrome (75857).

The spelling of 738671990 in words is "seven hundred thirty-eight million, six hundred seventy-one thousand, nine hundred ninety".