15406670420 has 12 divisors (see below), whose sum is σ = 32354007924. Its totient is φ = 6162668160.

The previous prime is 15406670381. The next prime is 15406670441. The reversal of 15406670420 is 2407660451.

It can be written as a sum of positive squares in 2 ways, for example, as 3575322436 + 11831347984 = 59794^2 + 108772^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385166741 + ... + 385166780.

It is an arithmetic number, because the mean of its divisors is an integer number (2696167327).

Almost surely, 2^15406670420 is an apocalyptic number.

15406670420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15406670420 is an abundant number, since it is smaller than the sum of its proper divisors (16947337504).

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

15406670420 is a wasteful number, since it uses less digits than its factorization.

15406670420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770333530 (or 770333528 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The spelling of 15406670420 in words is "fifteen billion, four hundred six million, six hundred seventy thousand, four hundred twenty".