90450036 has 18 divisors (see below), whose sum is σ = 228637682. Its totient is φ = 30150000.

The previous prime is 90449987. The next prime is 90450071. The reversal of 90450036 is 63005409.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 49617936 + 40832100 = 7044^2 + 6390^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 90449991 and 90450009.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1256215 + ... + 1256286.

Almost surely, 2^90450036 is an apocalyptic number.

It is an amenable number.

90450036 is an abundant number, since it is smaller than the sum of its proper divisors (138187646).

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

90450036 is a wasteful number, since it uses less digits than its factorization.

90450036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2512511 (or 2512506 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 90450036 is about 9510.5223831291. The cubic root of 90450036 is about 448.8861936123.

The spelling of 90450036 in words is "ninety million, four hundred fifty thousand, thirty-six".