90013078 has 8 divisors (see below), whose sum is σ = 135072072. Its totient is φ = 44989056.

The previous prime is 90013067. The next prime is 90013103. The reversal of 90013078 is 87031009.

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

It is a super-2 number, since 2×90013078² = 16204708422068168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 900 + ... + 13447.

It is an arithmetic number, because the mean of its divisors is an integer number (16884009).

Almost surely, 2^90013078 is an apocalyptic number.

90013078 is a deficient number, since it is larger than the sum of its proper divisors (45058994).

90013078 is a wasteful number, since it uses less digits than its factorization.

90013078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17486.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 90013078 is about 9487.5222265879. The cubic root of 90013078 is about 448.1621802012.

The spelling of 90013078 in words is "ninety million, thirteen thousand, seventy-eight".