325779840 has 256 divisors, whose sum is σ = 1222776000. Its totient is φ = 81690624.

The previous prime is 325779829. The next prime is 325779859. The reversal of 325779840 is 48977523.

325779840 is a `hidden beast` number, since 32 + 577 + 9 + 8 + 40 = 666.

It is a super-2 number, since 2×325779840² = 212265008300851200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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, 293206 + ... + 294314.

Almost surely, 2^325779840 is an apocalyptic number.

325779840 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 325779840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (611388000).

325779840 is an abundant number, since it is smaller than the sum of its proper divisors (896996160).

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

325779840 is a wasteful number, since it uses less digits than its factorization.

325779840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154 (or 1136 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 325779840 is about 18049.3722882542. The cubic root of 325779840 is about 688.0839090016.

The spelling of 325779840 in words is "three hundred twenty-five million, seven hundred seventy-nine thousand, eight hundred forty".