90210734 has 4 divisors (see below), whose sum is σ = 135316104. Its totient is φ = 45105366.

The previous prime is 90210733. The next prime is 90210749. The reversal of 90210734 is 43701209.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43701209 = 947 ⋅46147.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90210733) by changing a digit.

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 as a sum of consecutive naturals, namely, 22552682 + ... + 22552685.

It is an arithmetic number, because the mean of its divisors is an integer number (33829026).

Almost surely, 2^90210734 is an apocalyptic number.

90210734 is a deficient number, since it is larger than the sum of its proper divisors (45105370).

90210734 is a wasteful number, since it uses less digits than its factorization.

90210734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45105369.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 90210734 is about 9497.9331435845. The cubic root of 90210734 is about 448.4899739952.

The spelling of 90210734 in words is "ninety million, two hundred ten thousand, seven hundred thirty-four".