2429978 has 8 divisors (see below), whose sum is σ = 3654720. Its totient is φ = 1211740.

The previous prime is 2429971. The next prime is 2429983. The reversal of 2429978 is 8799242.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2429971) 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, 548 + ... + 2271.

It is an arithmetic number, because the mean of its divisors is an integer number (456840).

2^2429978 is an apocalyptic number.

2429978 is a deficient number, since it is larger than the sum of its proper divisors (1224742).

2429978 is a wasteful number, since it uses less digits than its factorization.

2429978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3252.

The product of its digits is 72576, while the sum is 41.

The square root of 2429978 is about 1558.8386702927. The cubic root of 2429978 is about 134.4417366716.

The spelling of 2429978 in words is "two million, four hundred twenty-nine thousand, nine hundred seventy-eight".