1047866420 has 48 divisors (see below), whose sum is σ = 2242008720. Its totient is φ = 411316224.

The previous prime is 1047866419. The next prime is 1047866423. The reversal of 1047866420 is 246687401.

It can be written as a sum of positive squares in 8 ways, for example, as 31787044 + 1016079376 = 5638^2 + 31876^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1047866423) 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, 241712 + ... + 246008.

It is an arithmetic number, because the mean of its divisors is an integer number (46708515).

Almost surely, 2^1047866420 is an apocalyptic number.

1047866420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1047866420 is an abundant number, since it is smaller than the sum of its proper divisors (1194142300).

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

1047866420 is a wasteful number, since it uses less digits than its factorization.

1047866420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4532 (or 4530 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 1047866420 is about 32370.7648967398. The cubic root of 1047866420 is about 1015.7074573147.

The spelling of 1047866420 in words is "one billion, forty-seven million, eight hundred sixty-six thousand, four hundred twenty".