2402388 has 18 divisors (see below), whose sum is σ = 6072794. Its totient is φ = 800784.

The previous prime is 2402383. The next prime is 2402401. The reversal of 2402388 is 8832042.

It can be written as a sum of positive squares in only one way, i.e., 2396304 + 6084 = 1548^2 + 78^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2402381) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33331 + ... + 33402.

2^2402388 is an apocalyptic number.

It is an amenable number.

2402388 is an abundant number, since it is smaller than the sum of its proper divisors (3670406).

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

2402388 is a wasteful number, since it uses less digits than its factorization.

2402388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66743 (or 66738 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 2402388 is about 1549.9638705467. The cubic root of 2402388 is about 133.9309810157.

It can be divided in two parts, 240 and 2388, that added together give a triangular number (2628 = T₇₂).

The spelling of 2402388 in words is "two million, four hundred two thousand, three hundred eighty-eight".