326779680 has 96 divisors (see below), whose sum is σ = 1062609408. Its totient is φ = 84326400.

The previous prime is 326779667. The next prime is 326779693. The reversal of 326779680 is 86977623.

It is an interprime number because it is at equal distance from previous prime (326779667) and next prime (326779693).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3900 + ... + 25860.

It is an arithmetic number, because the mean of its divisors is an integer number (11068848).

Almost surely, 2^326779680 is an apocalyptic number.

326779680 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 326779680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (531304704).

326779680 is an abundant number, since it is smaller than the sum of its proper divisors (735829728).

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

326779680 is a wasteful number, since it uses less digits than its factorization.

326779680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22010 (or 22002 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 48.

The square root of 326779680 is about 18077.0484316439. The cubic root of 326779680 is about 688.7871151921.

The spelling of 326779680 in words is "three hundred twenty-six million, seven hundred seventy-nine thousand, six hundred eighty".