28767442 has 16 divisors (see below), whose sum is σ = 48593664. Its totient is φ = 12654000.

The previous prime is 28767437. The next prime is 28767443. The reversal of 28767442 is 24476782.

It is a junction number, because it is equal to n+sod(n) for n = 28767395 and 28767404.

It is not an unprimeable number, because it can be changed into a prime (28767443) 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, 20409 + ... + 21772.

It is an arithmetic number, because the mean of its divisors is an integer number (3037104).

Almost surely, 2^28767442 is an apocalyptic number.

28767442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28767442 is a deficient number, since it is larger than the sum of its proper divisors (19826222).

28767442 is a wasteful number, since it uses less digits than its factorization.

28767442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42225.

The product of its digits is 150528, while the sum is 40.

The square root of 28767442 is about 5363.5288756564. The cubic root of 28767442 is about 306.4082224477.

The spelling of 28767442 in words is "twenty-eight million, seven hundred sixty-seven thousand, four hundred forty-two".