15450204220 has 48 divisors (see below), whose sum is σ = 35424250848. Its totient is φ = 5613615360.

The previous prime is 15450204199. The next prime is 15450204229. The reversal of 15450204220 is 2240205451.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15450204229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243754 + ... + 300526.

It is an arithmetic number, because the mean of its divisors is an integer number (738005226).

Almost surely, 2^15450204220 is an apocalyptic number.

15450204220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15450204220 is an abundant number, since it is smaller than the sum of its proper divisors (19974046628).

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

15450204220 is a wasteful number, since it uses less digits than its factorization.

15450204220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58030 (or 58028 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

Adding to 15450204220 its reverse (2240205451), we get a palindrome (17690409671).

The spelling of 15450204220 in words is "fifteen billion, four hundred fifty million, two hundred four thousand, two hundred twenty".