28029412 has 6 divisors (see below), whose sum is σ = 49051478. Its totient is φ = 14014704.

The previous prime is 28029409. The next prime is 28029473. The reversal of 28029412 is 21492082.

It can be written as a sum of positive squares in only one way, i.e., 27941796 + 87616 = 5286^2 + 296^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3503673 + ... + 3503680.

Almost surely, 2^28029412 is an apocalyptic number.

It is an amenable number.

28029412 is a deficient number, since it is larger than the sum of its proper divisors (21022066).

28029412 is a wasteful number, since it uses less digits than its factorization.

28029412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7007357 (or 7007355 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 28029412 is about 5294.2810654517. The cubic root of 28029412 is about 303.7651839745.

It can be divided in two parts, 28029 and 412, that added together give a triangular number (28441 = T₂₃₈).

The spelling of 28029412 in words is "twenty-eight million, twenty-nine thousand, four hundred twelve".