396322740 has 96 divisors (see below), whose sum is σ = 1345115520. Its totient is φ = 96076800.

The previous prime is 396322723. The next prime is 396322763. The reversal of 396322740 is 47223693.

It is a happy number.

396322740 is a `hidden beast` number, since 396 + 3 + 227 + 40 = 666.

It is a super-2 number, since 2×396322740² = 314143428482215200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 396322695 and 396322704.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27421 + ... + 39300.

It is an arithmetic number, because the mean of its divisors is an integer number (14011620).

Almost surely, 2^396322740 is an apocalyptic number.

396322740 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

396322740 is an abundant number, since it is smaller than the sum of its proper divisors (948792780).

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

396322740 is a wasteful number, since it uses less digits than its factorization.

396322740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66750 (or 66742 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 396322740 is about 19907.8562381789. The cubic root of 396322740 is about 734.5414882889.

The spelling of 396322740 in words is "three hundred ninety-six million, three hundred twenty-two thousand, seven hundred forty".