90708532 has 12 divisors (see below), whose sum is σ = 168077700. Its totient is φ = 42686336.

The previous prime is 90708529. The next prime is 90708539. The reversal of 90708532 is 23580709.

It can be written as a sum of positive squares in 2 ways, for example, as 80748196 + 9960336 = 8986^2 + 3156^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90708539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 666907 + ... + 667042.

It is an arithmetic number, because the mean of its divisors is an integer number (14006475).

Almost surely, 2^90708532 is an apocalyptic number.

It is an amenable number.

90708532 is a deficient number, since it is larger than the sum of its proper divisors (77369168).

90708532 is a wasteful number, since it uses less digits than its factorization.

90708532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333970 (or 1333968 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 90708532 is about 9524.1026873927. The cubic root of 90708532 is about 449.3134089281.

The spelling of 90708532 in words is "ninety million, seven hundred eight thousand, five hundred thirty-two".