90381534 has 8 divisors (see below), whose sum is σ = 180763080. Its totient is φ = 30127176.

The previous prime is 90381527. The next prime is 90381539. The reversal of 90381534 is 43518309.

It is a sphenic number, since it is the product of 3 distinct primes.

90381534 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 90381495 and 90381504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90381539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7531789 + ... + 7531800.

It is an arithmetic number, because the mean of its divisors is an integer number (22595385).

Almost surely, 2^90381534 is an apocalyptic number.

90381534 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

90381534 is a wasteful number, since it uses less digits than its factorization.

90381534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15063594.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 90381534 is about 9506.9203215342. The cubic root of 90381534 is about 448.7728442267.

The spelling of 90381534 in words is "ninety million, three hundred eighty-one thousand, five hundred thirty-four".