4721378 has 8 divisors (see below), whose sum is σ = 7155372. Its totient is φ = 2336256.

The previous prime is 4721377. The next prime is 4721383. The reversal of 4721378 is 8731274.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4133089 + 588289 = 2033^2 + 767^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4721377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11975 + ... + 12362.

Almost surely, 2^4721378 is an apocalyptic number.

4721378 is a deficient number, since it is larger than the sum of its proper divisors (2433994).

4721378 is a wasteful number, since it uses less digits than its factorization.

4721378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24436.

The product of its digits is 9408, while the sum is 32.

The square root of 4721378 is about 2172.8732130522. The cubic root of 4721378 is about 167.7604531944.

The spelling of 4721378 in words is "four million, seven hundred twenty-one thousand, three hundred seventy-eight".