5121428 has 24 divisors (see below), whose sum is σ = 9731400. Its totient is φ = 2344320.

The previous prime is 5121421. The next prime is 5121439. The reversal of 5121428 is 8241215.

It can be written as a sum of positive squares in 4 ways, for example, as 94864 + 5026564 = 308^2 + 2242^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5121421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7418 + ... + 8078.

It is an arithmetic number, because the mean of its divisors is an integer number (405475).

Almost surely, 2^5121428 is an apocalyptic number.

It is an amenable number.

5121428 is a deficient number, since it is larger than the sum of its proper divisors (4609972).

5121428 is a wasteful number, since it uses less digits than its factorization.

5121428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827 (or 825 counting only the distinct ones).

The product of its digits is 640, while the sum is 23.

The square root of 5121428 is about 2263.0572241992. The cubic root of 5121428 is about 172.3707973211.

The spelling of 5121428 in words is "five million, one hundred twenty-one thousand, four hundred twenty-eight".