445402311420 has 48 divisors (see below), whose sum is σ = 1360501607808. Its totient is φ = 107976317760.

The previous prime is 445402311391. The next prime is 445402311437. The reversal of 445402311420 is 24113204544.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337425334 + ... + 337426653.

It is an arithmetic number, because the mean of its divisors is an integer number (28343783496).

Almost surely, 2^445402311420 is an apocalyptic number.

It is an amenable number.

445402311420 is an abundant number, since it is smaller than the sum of its proper divisors (915099296388).

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

445402311420 is a wasteful number, since it uses less digits than its factorization.

445402311420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674852010 (or 674852008 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 445402311420 its reverse (24113204544), we get a palindrome (469515515964).

The spelling of 445402311420 in words is "four hundred forty-five billion, four hundred two million, three hundred eleven thousand, four hundred twenty".