28010438 has 16 divisors (see below), whose sum is σ = 42681600. Its totient is φ = 13785096.

The previous prime is 28010417. The next prime is 28010459. The reversal of 28010438 is 83401082.

It is an interprime number because it is at equal distance from previous prime (28010417) and next prime (28010459).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46463 + ... + 47061.

It is an arithmetic number, because the mean of its divisors is an integer number (2667600).

Almost surely, 2^28010438 is an apocalyptic number.

28010438 is a deficient number, since it is larger than the sum of its proper divisors (14671162).

28010438 is a wasteful number, since it uses less digits than its factorization.

28010438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 28010438 is about 5292.4888285191. The cubic root of 28010438 is about 303.6966257327.

The spelling of 28010438 in words is "twenty-eight million, ten thousand, four hundred thirty-eight".