28726461 has 16 divisors (see below), whose sum is σ = 44798400. Its totient is φ = 18142704.

The previous prime is 28726459. The next prime is 28726463. The reversal of 28726461 is 16462782.

28726461 is a `hidden beast` number, since 2 + 8 + 7 + 2 + 646 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (28726459) and next prime (28726463).

It is not a de Polignac number, because 28726461 - 2¹ = 28726459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28726463) 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, 27486 + ... + 28511.

It is an arithmetic number, because the mean of its divisors is an integer number (2799900).

Almost surely, 2^28726461 is an apocalyptic number.

It is an amenable number.

28726461 is a deficient number, since it is larger than the sum of its proper divisors (16071939).

28726461 is a wasteful number, since it uses less digits than its factorization.

28726461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56025 (or 56019 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 28726461 is about 5359.7071748371. The cubic root of 28726461 is about 306.2626541488.

The spelling of 28726461 in words is "twenty-eight million, seven hundred twenty-six thousand, four hundred sixty-one".