28492704 has 144 divisors (see below), whose sum is σ = 88058880. Its totient is φ = 8709120.

The previous prime is 28492687. The next prime is 28492721. The reversal of 28492704 is 40729482.

It is an interprime number because it is at equal distance from previous prime (28492687) and next prime (28492721).

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 224289 + ... + 224415.

It is an arithmetic number, because the mean of its divisors is an integer number (611520).

Almost surely, 2^28492704 is an apocalyptic number.

28492704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28492704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44029440).

28492704 is an abundant number, since it is smaller than the sum of its proper divisors (59566176).

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

28492704 is a wasteful number, since it uses less digits than its factorization.

28492704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203 (or 192 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 28492704 is about 5337.8557492686. The cubic root of 28492704 is about 305.4296694337.

The spelling of 28492704 in words is "twenty-eight million, four hundred ninety-two thousand, seven hundred four".