2549128 has 8 divisors (see below), whose sum is σ = 4779630. Its totient is φ = 1274560.

The previous prime is 2549123. The next prime is 2549143. The reversal of 2549128 is 8219452.

It can be written as a sum of positive squares in only one way, i.e., 1592644 + 956484 = 1262^2 + 978^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 2549128.

It is not an unprimeable number, because it can be changed into a prime (2549123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159313 + ... + 159328.

2^2549128 is an apocalyptic number.

It is an amenable number.

2549128 is a deficient number, since it is larger than the sum of its proper divisors (2230502).

2549128 is a wasteful number, since it uses less digits than its factorization.

2549128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318647 (or 318643 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The square root of 2549128 is about 1596.5988851305. The cubic root of 2549128 is about 136.6041461670.

The spelling of 2549128 in words is "two million, five hundred forty-nine thousand, one hundred twenty-eight".