28401760 has 24 divisors (see below), whose sum is σ = 67099536. Its totient is φ = 11360640.

The previous prime is 28401743. The next prime is 28401767. The reversal of 28401760 is 6710482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28401767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88596 + ... + 88915.

It is an arithmetic number, because the mean of its divisors is an integer number (2795814).

Almost surely, 2^28401760 is an apocalyptic number.

28401760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28401760 is an abundant number, since it is smaller than the sum of its proper divisors (38697776).

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

28401760 is a wasteful number, since it uses less digits than its factorization.

28401760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177526 (or 177518 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 28401760 is about 5329.3301642889. The cubic root of 28401760 is about 305.1043627450.

It can be divided in two parts, 28401 and 760, that added together give a triangular number (29161 = T₂₄₁).

The spelling of 28401760 in words is "twenty-eight million, four hundred one thousand, seven hundred sixty".