45019420 has 36 divisors (see below), whose sum is σ = 96689880. Its totient is φ = 17607328.

The previous prime is 45019393. The next prime is 45019423. The reversal of 45019420 is 2491054.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45019423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43671 + ... + 44689.

It is an arithmetic number, because the mean of its divisors is an integer number (2685830).

Almost surely, 2^45019420 is an apocalyptic number.

It is an amenable number.

45019420 is an abundant number, since it is smaller than the sum of its proper divisors (51670460).

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

45019420 is a wasteful number, since it uses less digits than its factorization.

45019420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122 (or 1073 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 45019420 is about 6709.6512577033. The cubic root of 45019420 is about 355.7404896592.

The spelling of 45019420 in words is "forty-five million, nineteen thousand, four hundred twenty".