1906005528 has 72 divisors (see below), whose sum is σ = 6004900980. Its totient is φ = 544572000.

The previous prime is 1906005511. The next prime is 1906005533. The reversal of 1906005528 is 8255006091.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

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 = 1906005492 and 1906005501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 266598 + ... + 273653.

Almost surely, 2^1906005528 is an apocalyptic number.

1906005528 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1906005528 is an abundant number, since it is smaller than the sum of its proper divisors (4098895452).

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

1906005528 is a wasteful number, since it uses less digits than its factorization.

1906005528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540277 (or 540263 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 1906005528 is about 43657.8232164637. The cubic root of 1906005528 is about 1239.8659081500.

The spelling of 1906005528 in words is "one billion, nine hundred six million, five thousand, five hundred twenty-eight".