15406904220 has 48 divisors (see below), whose sum is σ = 43365224448. Its totient is φ = 4086994240.

The previous prime is 15406904209. The next prime is 15406904251. The reversal of 15406904220 is 2240960451.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 660744 + ... + 683663.

It is an arithmetic number, because the mean of its divisors is an integer number (903442176).

Almost surely, 2^15406904220 is an apocalyptic number.

15406904220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15406904220 is an abundant number, since it is smaller than the sum of its proper divisors (27958320228).

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

15406904220 is a wasteful number, since it uses less digits than its factorization.

15406904220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344610 (or 1344608 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 15406904220 in words is "fifteen billion, four hundred six million, nine hundred four thousand, two hundred twenty".