45206290 has 8 divisors (see below), whose sum is σ = 81371340. Its totient is φ = 18082512.

The previous prime is 45206269. The next prime is 45206299. The reversal of 45206290 is 9260254.

It can be written as a sum of positive squares in 2 ways, for example, as 44076321 + 1129969 = 6639^2 + 1063^2 .

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 (45206299) 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, 2260305 + ... + 2260324.

Almost surely, 2^45206290 is an apocalyptic number.

45206290 is a deficient number, since it is larger than the sum of its proper divisors (36165050).

45206290 is a wasteful number, since it uses less digits than its factorization.

45206290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4520636.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 45206290 is about 6723.5622998527. The cubic root of 45206290 is about 356.2320216638.

The spelling of 45206290 in words is "forty-five million, two hundred six thousand, two hundred ninety".