396224781672 has 32 divisors (see below), whose sum is σ = 992531292480. Its totient is φ = 131812348800.

The previous prime is 396224781653. The next prime is 396224781677. The reversal of 396224781672 is 276187422693.

It is a super-2 number, since 2×396224781672² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (396224781677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16398829 + ... + 16422972.

It is an arithmetic number, because the mean of its divisors is an integer number (31016602890).

Almost surely, 2^396224781672 is an apocalyptic number.

It is an amenable number.

396224781672 is an abundant number, since it is smaller than the sum of its proper divisors (596306510808).

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

396224781672 is a wasteful number, since it uses less digits than its factorization.

396224781672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32822313 (or 32822309 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 57.

The spelling of 396224781672 in words is "three hundred ninety-six billion, two hundred twenty-four million, seven hundred eighty-one thousand, six hundred seventy-two".