1008644472 has 48 divisors (see below), whose sum is σ = 2980088280. Its totient is φ = 305649600.

The previous prime is 1008644467. The next prime is 1008644473. The reversal of 1008644472 is 2744468001.

1008644472 is a `hidden beast` number, since 1 + 0 + 0 + 8 + 644 + 4 + 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 not an unprimeable number, because it can be changed into a prime (1008644473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 635979 + ... + 637562.

Almost surely, 2^1008644472 is an apocalyptic number.

1008644472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1008644472 is an abundant number, since it is smaller than the sum of its proper divisors (1971443808).

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

1008644472 is a wasteful number, since it uses less digits than its factorization.

1008644472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273564 (or 1273557 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 1008644472 is about 31759.1635910016. The cubic root of 1008644472 is about 1002.8732273248.

The spelling of 1008644472 in words is "one billion, eight million, six hundred forty-four thousand, four hundred seventy-two".