1047729220 has 48 divisors (see below), whose sum is σ = 2229752448. Its totient is φ = 413504000.

The previous prime is 1047729187. The next prime is 1047729233. The reversal of 1047729220 is 229277401.

It is a happy 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, 566337 + ... + 568183.

It is an arithmetic number, because the mean of its divisors is an integer number (46453176).

Almost surely, 2^1047729220 is an apocalyptic number.

1047729220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1047729220 is an abundant number, since it is smaller than the sum of its proper divisors (1182023228).

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

1047729220 is a wasteful number, since it uses less digits than its factorization.

1047729220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2220 (or 2218 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 1047729220 is about 32368.6456312278. The cubic root of 1047729220 is about 1015.6631255999.

The spelling of 1047729220 in words is "one billion, forty-seven million, seven hundred twenty-nine thousand, two hundred twenty".