28977743 has 8 divisors (see below), whose sum is σ = 29724288. Its totient is φ = 28234584.

The previous prime is 28977737. The next prime is 28977749. The reversal of 28977743 is 34777982.

It is an interprime number because it is at equal distance from previous prime (28977737) and next prime (28977749).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28977743 - 2¹⁰ = 28976719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28977749) 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, 31496 + ... + 32402.

It is an arithmetic number, because the mean of its divisors is an integer number (3715536).

Almost surely, 2^28977743 is an apocalyptic number.

28977743 is a deficient number, since it is larger than the sum of its proper divisors (746545).

28977743 is an equidigital number, since it uses as much as digits as its factorization.

28977743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693.

The product of its digits is 592704, while the sum is 47.

The square root of 28977743 is about 5383.0978999086. The cubic root of 28977743 is about 307.1530641126.

The spelling of 28977743 in words is "twenty-eight million, nine hundred seventy-seven thousand, seven hundred forty-three".