405720236896 has 96 divisors (see below), whose sum is σ = 935422175520. Its totient is φ = 171477098496.

The previous prime is 405720236881. The next prime is 405720236897. The reversal of 405720236896 is 698632027504.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405720236897) 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, 513606 + ... + 1036933.

It is an arithmetic number, because the mean of its divisors is an integer number (9743980995).

Almost surely, 2^405720236896 is an apocalyptic number.

It is an amenable number.

405720236896 is an abundant number, since it is smaller than the sum of its proper divisors (529701938624).

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

405720236896 is a wasteful number, since it uses less digits than its factorization.

405720236896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550616 (or 1550608 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 52.

The spelling of 405720236896 in words is "four hundred five billion, seven hundred twenty million, two hundred thirty-six thousand, eight hundred ninety-six".