28571346 has 64 divisors (see below), whose sum is σ = 66096000. Its totient is φ = 9142848.

The previous prime is 28571329. The next prime is 28571353. The reversal of 28571346 is 64317582.

Its product of digits (40320) is a multiple of the sum of its prime factors (280).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28571346.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 191680 + ... + 191828.

It is an arithmetic number, because the mean of its divisors is an integer number (1032750).

Almost surely, 2^28571346 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28571346, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33048000).

28571346 is an abundant number, since it is smaller than the sum of its proper divisors (37524654).

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

28571346 is a wasteful number, since it uses less digits than its factorization.

28571346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 274 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 28571346 is about 5345.2171143930. The cubic root of 28571346 is about 305.7104142313.

It can be divided in two parts, 285 and 71346, that added together give a triangular number (71631 = T₃₇₈).

The spelling of 28571346 in words is "twenty-eight million, five hundred seventy-one thousand, three hundred forty-six".