90812043 has 48 divisors (see below), whose sum is σ = 158578560. Its totient is φ = 51205392.

The previous prime is 90812041. The next prime is 90812047. The reversal of 90812043 is 34021809.

It is not a de Polignac number, because 90812043 - 2¹ = 90812041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 90811998 and 90812016.

It is not an unprimeable number, because it can be changed into a prime (90812041) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 109396 + ... + 110222.

It is an arithmetic number, because the mean of its divisors is an integer number (3303720).

Almost surely, 2^90812043 is an apocalyptic number.

90812043 is a deficient number, since it is larger than the sum of its proper divisors (67766517).

90812043 is a wasteful number, since it uses less digits than its factorization.

90812043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933 (or 920 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 90812043 is about 9529.5352982189. The cubic root of 90812043 is about 449.4842535716.

The spelling of 90812043 in words is "ninety million, eight hundred twelve thousand, forty-three".