2205503478 has 28 divisors (see below), whose sum is σ = 4960117068. Its totient is φ = 735167340.

The previous prime is 2205503471. The next prime is 2205503533. The reversal of 2205503478 is 8743055022.

2205503478 is a `hidden beast` number, since 2 + 2 + 0 + 550 + 34 + 78 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2205503471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 754888 + ... + 757803.

Almost surely, 2^2205503478 is an apocalyptic number.

2205503478 is an abundant number, since it is smaller than the sum of its proper divisors (2754613590).

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

2205503478 is an equidigital number, since it uses as much as digits as its factorization.

2205503478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512711 (or 1512696 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 2205503478 is about 46962.7882264245. The cubic root of 2205503478 is about 1301.6750553529.

The spelling of 2205503478 in words is "two billion, two hundred five million, five hundred three thousand, four hundred seventy-eight".