90107740 has 24 divisors (see below), whose sum is σ = 190485792. Its totient is φ = 35803200.

The previous prime is 90107713. The next prime is 90107741. The reversal of 90107740 is 4770109.

It is a junction number, because it is equal to n+sod(n) for n = 90107699 and 90107708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90107741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11899 + ... + 17938.

It is an arithmetic number, because the mean of its divisors is an integer number (7936908).

Almost surely, 2^90107740 is an apocalyptic number.

It is an amenable number.

90107740 is an abundant number, since it is smaller than the sum of its proper divisors (100378052).

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

90107740 is a wasteful number, since it uses less digits than its factorization.

90107740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29997 (or 29995 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 90107740 is about 9492.5096786888. The cubic root of 90107740 is about 448.3192279927.

Adding to 90107740 its reverse (4770109), we get a palindrome (94877849).

The spelling of 90107740 in words is "ninety million, one hundred seven thousand, seven hundred forty".