28461534 has 32 divisors (see below), whose sum is σ = 61323264. Its totient is φ = 8780640.

The previous prime is 28461529. The next prime is 28461539. The reversal of 28461534 is 43516482.

It is an interprime number because it is at equal distance from previous prime (28461529) and next prime (28461539).

It is a junction number, because it is equal to n+sod(n) for n = 28461495 and 28461504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28461539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 952 + ... + 7604.

It is an arithmetic number, because the mean of its divisors is an integer number (1916352).

Almost surely, 2^28461534 is an apocalyptic number.

28461534 is the 2852-nd nonagonal number.

28461534 is an abundant number, since it is smaller than the sum of its proper divisors (32861730).

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

28461534 is a wasteful number, since it uses less digits than its factorization.

28461534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6712.

The product of its digits is 23040, while the sum is 33.

The square root of 28461534 is about 5334.9352385947. The cubic root of 28461534 is about 305.3182524137.

The spelling of 28461534 in words is "twenty-eight million, four hundred sixty-one thousand, five hundred thirty-four".