328225557 has 16 divisors (see below), whose sum is σ = 490324032. Its totient is φ = 193547520.

The previous prime is 328225553. The next prime is 328225561. The reversal of 328225557 is 755522823.

It is an interprime number because it is at equal distance from previous prime (328225553) and next prime (328225561).

It is not a de Polignac number, because 328225557 - 2² = 328225553 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328225553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133188 + ... + 135629.

It is an arithmetic number, because the mean of its divisors is an integer number (30645252).

Almost surely, 2^328225557 is an apocalyptic number.

328225557 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

328225557 is a deficient number, since it is larger than the sum of its proper divisors (162098475).

328225557 is a wasteful number, since it uses less digits than its factorization.

328225557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268868.

The product of its digits is 168000, while the sum is 39.

The square root of 328225557 is about 18116.9963570124. The cubic root of 328225557 is about 689.8014950929.

The spelling of 328225557 in words is "three hundred twenty-eight million, two hundred twenty-five thousand, five hundred fifty-seven".