325779720 has 128 divisors (see below), whose sum is σ = 1120953600. Its totient is φ = 74198016.

The previous prime is 325779697. The next prime is 325779733. The reversal of 325779720 is 27977523.

It is a super-2 number, since 2×325779720² = 212264851926556800, which contains 22 as substring.

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

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, 326262 + ... + 327258.

It is an arithmetic number, because the mean of its divisors is an integer number (8757450).

Almost surely, 2^325779720 is an apocalyptic number.

325779720 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 325779720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (560476800).

325779720 is an abundant number, since it is smaller than the sum of its proper divisors (795173880).

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

325779720 is a wasteful number, since it uses less digits than its factorization.

325779720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407 (or 1403 counting only the distinct ones).

The product of its (nonzero) digits is 185220, while the sum is 42.

The square root of 325779720 is about 18049.3689640386. The cubic root of 325779720 is about 688.0838245171.

The spelling of 325779720 in words is "three hundred twenty-five million, seven hundred seventy-nine thousand, seven hundred twenty".