398628744 has 32 divisors (see below), whose sum is σ = 1005397920. Its totient is φ = 131699456.

The previous prime is 398628731. The next prime is 398628781. The reversal of 398628744 is 447826893.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70782 + ... + 76205.

It is an arithmetic number, because the mean of its divisors is an integer number (31418685).

Almost surely, 2^398628744 is an apocalyptic number.

It is an amenable number.

398628744 is an abundant number, since it is smaller than the sum of its proper divisors (606769176).

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

398628744 is a wasteful number, since it uses less digits than its factorization.

398628744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147109 (or 147105 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 51.

The square root of 398628744 is about 19965.6891691722. The cubic root of 398628744 is about 735.9633773917.

The spelling of 398628744 in words is "three hundred ninety-eight million, six hundred twenty-eight thousand, seven hundred forty-four".