2528404 has 6 divisors (see below), whose sum is σ = 4424714. Its totient is φ = 1264200.

The previous prime is 2528399. The next prime is 2528411. The reversal of 2528404 is 4048252.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2464900 + 63504 = 1570^2 + 252^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316047 + ... + 316054.

2^2528404 is an apocalyptic number.

It is an amenable number.

2528404 is a deficient number, since it is larger than the sum of its proper divisors (1896310).

2528404 is a wasteful number, since it uses less digits than its factorization.

2528404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632105 (or 632103 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 2528404 is about 1590.0955946106. The cubic root of 2528404 is about 136.2329485156.

The spelling of 2528404 in words is "two million, five hundred twenty-eight thousand, four hundred four".