28101465 has 64 divisors (see below), whose sum is σ = 57784320. Its totient is φ = 12692160.

The previous prime is 28101457. The next prime is 28101467. The reversal of 28101465 is 56410182.

It is not a de Polignac number, because 28101465 - 2³ = 28101457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28101467) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 123682 + ... + 123908.

It is an arithmetic number, because the mean of its divisors is an integer number (902880).

Almost surely, 2^28101465 is an apocalyptic number.

It is an amenable number.

28101465 is an abundant number, since it is smaller than the sum of its proper divisors (29682855).

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

28101465 is a wasteful number, since it uses less digits than its factorization.

28101465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379 (or 373 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 28101465 is about 5301.0814934313. The cubic root of 28101465 is about 304.0252496629.

The spelling of 28101465 in words is "twenty-eight million, one hundred one thousand, four hundred sixty-five".