823988901420 has 96 divisors (see below), whose sum is σ = 2563900684800. Its totient is φ = 219697831872.

The previous prime is 823988901419. The next prime is 823988901427. The reversal of 823988901420 is 24109889328.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (823988901427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3652671 + ... + 3871689.

It is an arithmetic number, because the mean of its divisors is an integer number (26707298800).

Almost surely, 2^823988901420 is an apocalyptic number.

It is an amenable number.

823988901420 is an abundant number, since it is smaller than the sum of its proper divisors (1739911783380).

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

823988901420 is a wasteful number, since it uses less digits than its factorization.

823988901420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226004 (or 225996 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The spelling of 823988901420 in words is "eight hundred twenty-three billion, nine hundred eighty-eight million, nine hundred one thousand, four hundred twenty".