13404370420 has 108 divisors (see below), whose sum is σ = 34559999460. Its totient is φ = 4353785856.

The previous prime is 13404370417. The next prime is 13404370481. The reversal of 13404370420 is 2407340431.

It can be written as a sum of positive squares in 2 ways, for example, as 3874315536 + 9530054884 = 62244^2 + 97622^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 334836 + ... + 372724.

It is an arithmetic number, because the mean of its divisors is an integer number (319999995).

Almost surely, 2^13404370420 is an apocalyptic number.

13404370420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13404370420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17279999730).

13404370420 is an abundant number, since it is smaller than the sum of its proper divisors (21155629040).

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

13404370420 is a wasteful number, since it uses less digits than its factorization.

13404370420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37950 (or 37922 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

The spelling of 13404370420 in words is "thirteen billion, four hundred four million, three hundred seventy thousand, four hundred twenty".