45490420 has 12 divisors (see below), whose sum is σ = 95529924. Its totient is φ = 18196160.

The previous prime is 45490409. The next prime is 45490441. The reversal of 45490420 is 2409454.

It can be written as a sum of positive squares in 2 ways, for example, as 23155344 + 22335076 = 4812^2 + 4726^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1137241 + ... + 1137280.

It is an arithmetic number, because the mean of its divisors is an integer number (7960827).

Almost surely, 2^45490420 is an apocalyptic number.

It is an amenable number.

45490420 is an abundant number, since it is smaller than the sum of its proper divisors (50039504).

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

45490420 is a wasteful number, since it uses less digits than its factorization.

45490420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2274530 (or 2274528 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 45490420 is about 6744.6586273880. The cubic root of 45490420 is about 356.9767918230.

Adding to 45490420 its reverse (2409454), we get a palindrome (47899874).

The spelling of 45490420 in words is "forty-five million, four hundred ninety thousand, four hundred twenty".