326921040 has 240 divisors, whose sum is σ = 1152592896. Its totient is φ = 82944000.

The previous prime is 326921027. The next prime is 326921051. The reversal of 326921040 is 40129623.

It is a tau number, because it is divible by the number of its divisors (240).

It is a junction number, because it is equal to n+sod(n) for n = 326920995 and 326921013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2164965 + ... + 2165115.

Almost surely, 2^326921040 is an apocalyptic number.

326921040 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 326921040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (576296448).

326921040 is an abundant number, since it is smaller than the sum of its proper divisors (825671856).

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

326921040 is a wasteful number, since it uses less digits than its factorization.

326921040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 326921040 is about 18080.9579392243. The cubic root of 326921040 is about 688.8864205407.

The spelling of 326921040 in words is "three hundred twenty-six million, nine hundred twenty-one thousand, forty".