90438342 has 32 divisors (see below), whose sum is σ = 184376832. Its totient is φ = 29566944.

The previous prime is 90438133. The next prime is 90438343. The reversal of 90438342 is 24383409.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90438343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147228 + ... + 147840.

It is an arithmetic number, because the mean of its divisors is an integer number (5761776).

Almost surely, 2^90438342 is an apocalyptic number.

90438342 is an abundant number, since it is smaller than the sum of its proper divisors (93938490).

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

90438342 is a wasteful number, since it uses less digits than its factorization.

90438342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 90438342 is about 9509.9075705287. The cubic root of 90438342 is about 448.8668477516.

The spelling of 90438342 in words is "ninety million, four hundred thirty-eight thousand, three hundred forty-two".