378224705 has 8 divisors (see below), whose sum is σ = 461310504. Its totient is φ = 297619200.

The previous prime is 378224681. The next prime is 378224731. The reversal of 378224705 is 507422873.

It is a Cunningham number, because it is equal to 19448²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 12306064 + 365918641 = 3508^2 + 19129^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-378224705 is a prime.

It is a Duffinian 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, 619736 + ... + 620345.

It is an arithmetic number, because the mean of its divisors is an integer number (57663813).

Almost surely, 2^378224705 is an apocalyptic number.

It is an amenable number.

378224705 is a deficient number, since it is larger than the sum of its proper divisors (83085799).

378224705 is a wasteful number, since it uses less digits than its factorization.

378224705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240147.

The product of its (nonzero) digits is 94080, while the sum is 38.

The square root of 378224705 is about 19448.0000257096. Note that the first 4 decimals coincide. The cubic root of 378224705 is about 723.1859236280.

The spelling of 378224705 in words is "three hundred seventy-eight million, two hundred twenty-four thousand, seven hundred five".