90340140 has 48 divisors (see below), whose sum is σ = 275950080. Its totient is φ = 21900480.

The previous prime is 90340111. The next prime is 90340163. The reversal of 90340140 is 4104309.

It is a super-2 number, since 2×90340140² = 16322681790439200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67780 + ... + 69099.

It is an arithmetic number, because the mean of its divisors is an integer number (5748960).

Almost surely, 2^90340140 is an apocalyptic number.

It is an amenable number.

90340140 is an abundant number, since it is smaller than the sum of its proper divisors (185609940).

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

90340140 is a wasteful number, since it uses less digits than its factorization.

90340140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136902 (or 136900 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 90340140 is about 9504.7430265105. The cubic root of 90340140 is about 448.7043223397.

Adding to 90340140 its reverse (4104309), we get a palindrome (94444449).

The spelling of 90340140 in words is "ninety million, three hundred forty thousand, one hundred forty".