90432340 has 12 divisors (see below), whose sum is σ = 189907956. Its totient is φ = 36172928.

The previous prime is 90432323. The next prime is 90432341. The reversal of 90432340 is 4323409.

It can be written as a sum of positive squares in 2 ways, for example, as 34152336 + 56280004 = 5844^2 + 7502^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90432341) 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, 2260789 + ... + 2260828.

It is an arithmetic number, because the mean of its divisors is an integer number (15825663).

Almost surely, 2^90432340 is an apocalyptic number.

It is an amenable number.

90432340 is an abundant number, since it is smaller than the sum of its proper divisors (99475616).

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

90432340 is a wasteful number, since it uses less digits than its factorization.

90432340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4521626 (or 4521624 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 90432340 is about 9509.5919996601. The cubic root of 90432340 is about 448.8569177508.

Adding to 90432340 its reverse (4323409), we get a palindrome (94755749).

The spelling of 90432340 in words is "ninety million, four hundred thirty-two thousand, three hundred forty".