90780834 has 16 divisors (see below), whose sum is σ = 187418880. Its totient is φ = 29284080.

The previous prime is 90780797. The next prime is 90780887. The reversal of 90780834 is 43808709.

It is a super-3 number, since 3×90780834³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90780792 and 90780801.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243849 + ... + 244220.

It is an arithmetic number, because the mean of its divisors is an integer number (11713680).

Almost surely, 2^90780834 is an apocalyptic number.

90780834 is an abundant number, since it is smaller than the sum of its proper divisors (96638046).

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

90780834 is a wasteful number, since it uses less digits than its factorization.

90780834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488105.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 90780834 is about 9527.8976694757. The cubic root of 90780834 is about 449.4327568726.

The spelling of 90780834 in words is "ninety million, seven hundred eighty thousand, eight hundred thirty-four".