396522240 has 144 divisors (see below), whose sum is σ = 1307636736. Its totient is φ = 102297600.

The previous prime is 396522239. The next prime is 396522241. The reversal of 396522240 is 42225693.

It is an interprime number because it is at equal distance from previous prime (396522239) and next prime (396522241).

It is not an unprimeable number, because it can be changed into a prime (396522241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117375 + ... + 120705.

Almost surely, 2^396522240 is an apocalyptic number.

396522240 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 396522240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (653818368).

396522240 is an abundant number, since it is smaller than the sum of its proper divisors (911114496).

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

396522240 is a wasteful number, since it uses less digits than its factorization.

396522240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3386 (or 3372 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 396522240 is about 19912.8661924897. The cubic root of 396522240 is about 734.6647181977.

The spelling of 396522240 in words is "three hundred ninety-six million, five hundred twenty-two thousand, two hundred forty".