28462905 has 24 divisors (see below), whose sum is σ = 50149320. Its totient is φ = 14929920.

The previous prime is 28462901. The next prime is 28462921. The reversal of 28462905 is 50926482.

It is a happy number.

28462905 is a `hidden beast` number, since 28 + 4 + 629 + 0 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1806336 + 26656569 = 1344^2 + 5163^2 .

It is not a de Polignac number, because 28462905 - 2² = 28462901 is a prime.

It is a super-2 number, since 2×28462905² = 1620273922078050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28462905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28462901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2440 + ... + 7929.

It is an arithmetic number, because the mean of its divisors is an integer number (2089555).

Almost surely, 2^28462905 is an apocalyptic number.

It is an amenable number.

28462905 is a deficient number, since it is larger than the sum of its proper divisors (21686415).

28462905 is a wasteful number, since it uses less digits than its factorization.

28462905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10441 (or 10438 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 28462905 is about 5335.0637297037. The cubic root of 28462905 is about 305.3231547567.

The spelling of 28462905 in words is "twenty-eight million, four hundred sixty-two thousand, nine hundred five".