45420280 has 32 divisors (see below), whose sum is σ = 103011840. Its totient is φ = 18023040.

The previous prime is 45420269. The next prime is 45420289. The reversal of 45420280 is 8202454.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45420289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 610 + ... + 9550.

It is an arithmetic number, because the mean of its divisors is an integer number (3219120).

Almost surely, 2^45420280 is an apocalyptic number.

45420280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45420280 is an abundant number, since it is smaller than the sum of its proper divisors (57591560).

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

45420280 is a wasteful number, since it uses less digits than its factorization.

45420280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9079 (or 9075 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 45420280 is about 6739.4569514168. The cubic root of 45420280 is about 356.7932276661.

The spelling of 45420280 in words is "forty-five million, four hundred twenty thousand, two hundred eighty".