2392778 has 8 divisors (see below), whose sum is σ = 3672768. Its totient is φ = 1168524.

The previous prime is 2392777. The next prime is 2392781. The reversal of 2392778 is 8772932.

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

It is a d-powerful number, because it can be written as 2² + 3¹³ + 9⁶ + 2¹⁸ + 7⁴ + 7⁴ + 8² .

It is not an unprimeable number, because it can be changed into a prime (2392777) 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, 13826 + ... + 13997.

It is an arithmetic number, because the mean of its divisors is an integer number (459096).

2^2392778 is an apocalyptic number.

2392778 is a deficient number, since it is larger than the sum of its proper divisors (1279990).

2392778 is a wasteful number, since it uses less digits than its factorization.

2392778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27868.

The product of its digits is 42336, while the sum is 38.

The square root of 2392778 is about 1546.8606918530. The cubic root of 2392778 is about 133.7521593968.

The spelling of 2392778 in words is "two million, three hundred ninety-two thousand, seven hundred seventy-eight".