20401402302 has 24 divisors (see below), whose sum is σ = 44224924536. Its totient is φ = 6797100336.

The previous prime is 20401402289. The next prime is 20401402303. The reversal of 20401402302 is 20320410402.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20401402303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 243093 + ... + 316064.

It is an arithmetic number, because the mean of its divisors is an integer number (1842705189).

Almost surely, 2^20401402302 is an apocalyptic number.

20401402302 is an abundant number, since it is smaller than the sum of its proper divisors (23823522234).

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

20401402302 is a wasteful number, since it uses less digits than its factorization.

20401402302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561192 (or 561189 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 20401402302 its reverse (20320410402), we get a palindrome (40721812704).

The spelling of 20401402302 in words is "twenty billion, four hundred one million, four hundred two thousand, three hundred two".