326284140 has 144 divisors (see below), whose sum is σ = 1144638432. Its totient is φ = 68834304.

The previous prime is 326284139. The next prime is 326284157. The reversal of 326284140 is 41482623.

It is a super-2 number, since 2×326284140² = 212922680031079200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 326284098 and 326284107.

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, 33952 + ... + 42488.

It is an arithmetic number, because the mean of its divisors is an integer number (7948878).

Almost surely, 2^326284140 is an apocalyptic number.

326284140 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 326284140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (572319216).

326284140 is an abundant number, since it is smaller than the sum of its proper divisors (818354292).

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

326284140 is a wasteful number, since it uses less digits than its factorization.

326284140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8576 (or 8567 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 326284140 is about 18063.3369010269. The cubic root of 326284140 is about 688.4387721911.

The spelling of 326284140 in words is "three hundred twenty-six million, two hundred eighty-four thousand, one hundred forty".