28461678 has 32 divisors (see below), whose sum is σ = 65953536. Its totient is φ = 8019648.

The previous prime is 28461637. The next prime is 28461691. The reversal of 28461678 is 87616482.

It is a super-2 number, since 2×28461678² = 1620134229151368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1576 + ... + 7707.

It is an arithmetic number, because the mean of its divisors is an integer number (2061048).

Almost surely, 2^28461678 is an apocalyptic number.

28461678 is an abundant number, since it is smaller than the sum of its proper divisors (37491858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28461678 is a wasteful number, since it uses less digits than its factorization.

28461678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9368.

The product of its digits is 129024, while the sum is 42.

The square root of 28461678 is about 5334.9487345241. The cubic root of 28461678 is about 305.3187673280.

The spelling of 28461678 in words is "twenty-eight million, four hundred sixty-one thousand, six hundred seventy-eight".