45090340 has 12 divisors (see below), whose sum is σ = 94689756. Its totient is φ = 18036128.

The previous prime is 45090323. The next prime is 45090347. The reversal of 45090340 is 4309054.

It can be written as a sum of positive squares in 2 ways, for example, as 16957924 + 28132416 = 4118^2 + 5304^2 .

It is a super-2 number, since 2×45090340² = 4066277522631200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45090347) 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, 1127239 + ... + 1127278.

It is an arithmetic number, because the mean of its divisors is an integer number (7890813).

Almost surely, 2^45090340 is an apocalyptic number.

It is an amenable number.

45090340 is an abundant number, since it is smaller than the sum of its proper divisors (49599416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45090340 is a wasteful number, since it uses less digits than its factorization.

45090340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2254526 (or 2254524 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 45090340 is about 6714.9341024317. The cubic root of 45090340 is about 355.9271933761.

Adding to 45090340 its reverse (4309054), we get a palindrome (49399394).

The spelling of 45090340 in words is "forty-five million, ninety thousand, three hundred forty".