45209280 has 56 divisors (see below), whose sum is σ = 143542512. Its totient is φ = 12055552.

The previous prime is 45209267. The next prime is 45209287. The reversal of 45209280 is 8290254.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (45209287) 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, 22587 + ... + 24506.

Almost surely, 2^45209280 is an apocalyptic number.

45209280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45209280 is an abundant number, since it is smaller than the sum of its proper divisors (98333232).

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

45209280 is a wasteful number, since it uses less digits than its factorization.

45209280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47113 (or 47103 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 45209280 is about 6723.7846485443. The cubic root of 45209280 is about 356.2398753663.

The spelling of 45209280 in words is "forty-five million, two hundred nine thousand, two hundred eighty".