4902778 has 4 divisors (see below), whose sum is σ = 7354170. Its totient is φ = 2451388.

The previous prime is 4902773. The next prime is 4902787. The reversal of 4902778 is 8772094.

It is a happy number.

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., 2934369 + 1968409 = 1713^2 + 1403^2 .

It is not an unprimeable number, because it can be changed into a prime (4902773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1225693 + ... + 1225696.

Almost surely, 2^4902778 is an apocalyptic number.

4902778 is a deficient number, since it is larger than the sum of its proper divisors (2451392).

4902778 is a wasteful number, since it uses less digits than its factorization.

4902778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451391.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 4902778 is about 2214.2217594451. The cubic root of 4902778 is about 169.8820173297.

The spelling of 4902778 in words is "four million, nine hundred two thousand, seven hundred seventy-eight".