2388978 has 12 divisors (see below), whose sum is σ = 5176158. Its totient is φ = 796320.

The previous prime is 2388961. The next prime is 2388983. The reversal of 2388978 is 8798832.

It can be written as a sum of positive squares in only one way, i.e., 1292769 + 1096209 = 1137^2 + 1047^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66343 + ... + 66378.

2^2388978 is an apocalyptic number.

2388978 is an abundant number, since it is smaller than the sum of its proper divisors (2787180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2388978 is a wasteful number, since it uses less digits than its factorization.

2388978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132729 (or 132726 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 2388978 is about 1545.6319096085. The cubic root of 2388978 is about 133.6813174020.

It can be divided in two parts, 238 and 8978, that added together give a square (9216 = 96²).

The spelling of 2388978 in words is "two million, three hundred eighty-eight thousand, nine hundred seventy-eight".