28761953 has 12 divisors (see below), whose sum is σ = 33119568. Its totient is φ = 24767640.

The previous prime is 28761949. The next prime is 28762009. The reversal of 28761953 is 35916782.

It is not a de Polignac number, because 28761953 - 2² = 28761949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28761953.

It is not an unprimeable number, because it can be changed into a prime (28761253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 350 + ... + 7592.

It is an arithmetic number, because the mean of its divisors is an integer number (2759964).

Almost surely, 2^28761953 is an apocalyptic number.

It is an amenable number.

28761953 is a deficient number, since it is larger than the sum of its proper divisors (4357615).

28761953 is a wasteful number, since it uses less digits than its factorization.

28761953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7292 (or 7273 counting only the distinct ones).

The product of its digits is 90720, while the sum is 41.

The square root of 28761953 is about 5363.0171545502. The cubic root of 28761953 is about 306.3887330342.

The spelling of 28761953 in words is "twenty-eight million, seven hundred sixty-one thousand, nine hundred fifty-three".