90745378 has 8 divisors (see below), whose sum is σ = 136203372. Its totient is φ = 45344256.

The previous prime is 90745331. The next prime is 90745397. The reversal of 90745378 is 87354709.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 78021889 + 12723489 = 8833^2 + 3567^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 9975 + ... + 16762.

Almost surely, 2^90745378 is an apocalyptic number.

90745378 is a deficient number, since it is larger than the sum of its proper divisors (45457994).

90745378 is a wasteful number, since it uses less digits than its factorization.

90745378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28436.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 90745378 is about 9526.0368464540. The cubic root of 90745378 is about 449.3742380489.

The spelling of 90745378 in words is "ninety million, seven hundred forty-five thousand, three hundred seventy-eight".