28461658 has 32 divisors (see below), whose sum is σ = 47715840. Its totient is φ = 12674880.

The previous prime is 28461637. The next prime is 28461691. The reversal of 28461658 is 85616482.

It is a super-2 number, since 2×28461658² = 1620131952217928, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 28461658.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43260 + ... + 43912.

It is an arithmetic number, because the mean of its divisors is an integer number (1491120).

Almost surely, 2^28461658 is an apocalyptic number.

28461658 is a deficient number, since it is larger than the sum of its proper divisors (19254182).

28461658 is a wasteful number, since it uses less digits than its factorization.

28461658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742.

The product of its digits is 92160, while the sum is 40.

The square root of 28461658 is about 5334.9468600915. The cubic root of 28461658 is about 305.3186958123.

The spelling of 28461658 in words is "twenty-eight million, four hundred sixty-one thousand, six hundred fifty-eight".