90168038 has 8 divisors (see below), whose sum is σ = 138907632. Its totient is φ = 43865496.

The previous prime is 90168037. The next prime is 90168079. The reversal of 90168038 is 83086109.

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

It is a junction number, because it is equal to n+sod(n) for n = 90167989 and 90168007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90168037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 609170 + ... + 609317.

It is an arithmetic number, because the mean of its divisors is an integer number (17363454).

Almost surely, 2^90168038 is an apocalyptic number.

90168038 is a deficient number, since it is larger than the sum of its proper divisors (48739594).

90168038 is a wasteful number, since it uses less digits than its factorization.

90168038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218526.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 90168038 is about 9495.6852306719. The cubic root of 90168038 is about 448.4192072884.

The spelling of 90168038 in words is "ninety million, one hundred sixty-eight thousand, thirty-eight".