2429278 has 4 divisors (see below), whose sum is σ = 3643920. Its totient is φ = 1214638.

The previous prime is 2429269. The next prime is 2429279. The reversal of 2429278 is 8729242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8729242 = 2 ⋅4364621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2429279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607318 + ... + 607321.

It is an arithmetic number, because the mean of its divisors is an integer number (910980).

2^2429278 is an apocalyptic number.

2429278 is a deficient number, since it is larger than the sum of its proper divisors (1214642).

2429278 is a wasteful number, since it uses less digits than its factorization.

2429278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214641.

The product of its digits is 16128, while the sum is 34.

The square root of 2429278 is about 1558.6141279996. The cubic root of 2429278 is about 134.4288259575.

The spelling of 2429278 in words is "two million, four hundred twenty-nine thousand, two hundred seventy-eight".