45784920 has 32 divisors (see below), whose sum is σ = 137355120. Its totient is φ = 12209280.

The previous prime is 45784903. The next prime is 45784993. The reversal of 45784920 is 2948754.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190651 + ... + 190890.

Almost surely, 2^45784920 is an apocalyptic number.

45784920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45784920 is an abundant number, since it is smaller than the sum of its proper divisors (91570200).

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

45784920 is a wasteful number, since it uses less digits than its factorization.

45784920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381555 (or 381551 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 45784920 is about 6766.4554975260. The cubic root of 45784920 is about 357.7454782970.

The spelling of 45784920 in words is "forty-five million, seven hundred eighty-four thousand, nine hundred twenty".