90213746 has 8 divisors (see below), whose sum is σ = 154652160. Its totient is φ = 38663028.

The previous prime is 90213743. The next prime is 90213803. The reversal of 90213746 is 64731209.

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

It is not an unprimeable number, because it can be changed into a prime (90213743) 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, 3221906 + ... + 3221933.

It is an arithmetic number, because the mean of its divisors is an integer number (19331520).

Almost surely, 2^90213746 is an apocalyptic number.

90213746 is a deficient number, since it is larger than the sum of its proper divisors (64438414).

90213746 is a wasteful number, since it uses less digits than its factorization.

90213746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6443848.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 90213746 is about 9498.0917030738. The cubic root of 90213746 is about 448.4949654070.

The spelling of 90213746 in words is "ninety million, two hundred thirteen thousand, seven hundred forty-six".