90024945 has 48 divisors (see below), whose sum is σ = 161211840. Its totient is φ = 42771456.

The previous prime is 90024943. The next prime is 90024989. The reversal of 90024945 is 54942009.

It is not a de Polignac number, because 90024945 - 2¹ = 90024943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90024941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 81819 + ... + 82911.

It is an arithmetic number, because the mean of its divisors is an integer number (3358580).

Almost surely, 2^90024945 is an apocalyptic number.

90024945 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

90024945 is a deficient number, since it is larger than the sum of its proper divisors (71186895).

90024945 is a wasteful number, since it uses less digits than its factorization.

90024945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154 (or 1137 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 90024945 is about 9488.1476063560. The cubic root of 90024945 is about 448.1818740316.

The spelling of 90024945 in words is "ninety million, twenty-four thousand, nine hundred forty-five".