515228472 has 256 divisors, whose sum is σ = 1674432000. Its totient is φ = 145152000.

The previous prime is 515228449. The next prime is 515228489. The reversal of 515228472 is 274822515.

It is a happy number.

515228472 is a `hidden beast` number, since 51 + 522 + 84 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4559488 + ... + 4559600.

It is an arithmetic number, because the mean of its divisors is an integer number (6540750).

Almost surely, 2^515228472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 515228472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (837216000).

515228472 is an abundant number, since it is smaller than the sum of its proper divisors (1159203528).

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

515228472 is a wasteful number, since it uses less digits than its factorization.

515228472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 249 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 515228472 is about 22698.6447172513. The cubic root of 515228472 is about 801.6779738772.

The spelling of 515228472 in words is "five hundred fifteen million, two hundred twenty-eight thousand, four hundred seventy-two".