2447378 has 4 divisors (see below), whose sum is σ = 3671070. Its totient is φ = 1223688.

The previous prime is 2447369. The next prime is 2447399. The reversal of 2447378 is 8737442.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1481089 + 966289 = 1217^2 + 983^2 .

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611843 + ... + 611846.

2^2447378 is an apocalyptic number.

2447378 is a deficient number, since it is larger than the sum of its proper divisors (1223692).

2447378 is a wasteful number, since it uses less digits than its factorization.

2447378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223691.

The product of its digits is 37632, while the sum is 35.

The square root of 2447378 is about 1564.4097928612. The cubic root of 2447378 is about 134.7618664276.

Subtracting 2447378 from its reverse (8737442), we obtain a square (6290064 = 2508²).

The spelling of 2447378 in words is "two million, four hundred forty-seven thousand, three hundred seventy-eight".