1566044028 has 36 divisors (see below), whose sum is σ = 3975059088. Its totient is φ = 519845760.

The previous prime is 1566044023. The next prime is 1566044041. The reversal of 1566044028 is 8204406651.

1566044028 is a `hidden beast` number, since 1 + 5 + 6 + 604 + 40 + 2 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 1566043983 and 1566044001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1566044023) 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, 81576 + ... + 98927.

It is an arithmetic number, because the mean of its divisors is an integer number (110418308).

Almost surely, 2^1566044028 is an apocalyptic number.

1566044028 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1566044028 is an abundant number, since it is smaller than the sum of its proper divisors (2409015060).

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

1566044028 is a wasteful number, since it uses less digits than its factorization.

1566044028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180754 (or 180749 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 1566044028 is about 39573.2741632532. The cubic root of 1566044028 is about 1161.2738750338.

The spelling of 1566044028 in words is "one billion, five hundred sixty-six million, forty-four thousand, twenty-eight".