326156040 has 192 divisors, whose sum is σ = 1253491200. Its totient is φ = 71963136.

The previous prime is 326156023. The next prime is 326156041. The reversal of 326156040 is 40651623.

326156040 is a `hidden beast` number, since 3 + 2 + 61 + 560 + 40 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 326155995 and 326156013.

It is not an unprimeable number, because it can be changed into a prime (326156041) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70849 + ... + 75311.

It is an arithmetic number, because the mean of its divisors is an integer number (6528600).

Almost surely, 2^326156040 is an apocalyptic number.

326156040 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 326156040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (626745600).

326156040 is an abundant number, since it is smaller than the sum of its proper divisors (927335160).

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

326156040 is a wasteful number, since it uses less digits than its factorization.

326156040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4516 (or 4509 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 326156040 is about 18059.7906964616. The cubic root of 326156040 is about 688.3486661154.

The spelling of 326156040 in words is "three hundred twenty-six million, one hundred fifty-six thousand, forty".