28773446 has 8 divisors (see below), whose sum is σ = 46480224. Its totient is φ = 13280040.

The previous prime is 28773443. The next prime is 28773473. The reversal of 28773446 is 64437782.

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

It is a super-2 number, since 2×28773446² = 1655822389429832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28773443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553310 + ... + 553361.

It is an arithmetic number, because the mean of its divisors is an integer number (5810028).

Almost surely, 2^28773446 is an apocalyptic number.

28773446 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28773446 is a deficient number, since it is larger than the sum of its proper divisors (17706778).

28773446 is a wasteful number, since it uses less digits than its factorization.

28773446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106686.

The product of its digits is 225792, while the sum is 41.

The square root of 28773446 is about 5364.0885525875. The cubic root of 28773446 is about 306.4295375974.

The spelling of 28773446 in words is "twenty-eight million, seven hundred seventy-three thousand, four hundred forty-six".