28412031 has 16 divisors (see below), whose sum is σ = 38890368. Its totient is φ = 18444000.

The previous prime is 28412029. The next prime is 28412051. The reversal of 28412031 is 13021482.

It is not a de Polignac number, because 28412031 - 2¹ = 28412029 is a prime.

It is a super-2 number, since 2×28412031² = 1614487011089922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28411989 and 28412007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28412051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18856 + ... + 20306.

It is an arithmetic number, because the mean of its divisors is an integer number (2430648).

Almost surely, 2^28412031 is an apocalyptic number.

28412031 is a deficient number, since it is larger than the sum of its proper divisors (10478337).

28412031 is a wasteful number, since it uses less digits than its factorization.

28412031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 28412031 is about 5330.2937067295. The cubic root of 28412031 is about 305.1411368655.

The spelling of 28412031 in words is "twenty-eight million, four hundred twelve thousand, thirty-one".