28402395 has 32 divisors (see below), whose sum is σ = 52211712. Its totient is φ = 12915072.

The previous prime is 28402391. The next prime is 28402411. The reversal of 28402395 is 59320482.

It is a happy number.

It is not a de Polignac number, because 28402395 - 2² = 28402391 is a prime.

It is a super-3 number, since 3×28402395³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (28402391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22809 + ... + 24021.

It is an arithmetic number, because the mean of its divisors is an integer number (1631616).

Almost surely, 2^28402395 is an apocalyptic number.

28402395 is a deficient number, since it is larger than the sum of its proper divisors (23809317).

28402395 is a wasteful number, since it uses less digits than its factorization.

28402395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1451.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 28402395 is about 5329.3897399233. The cubic root of 28402395 is about 305.1066365457.

The spelling of 28402395 in words is "twenty-eight million, four hundred two thousand, three hundred ninety-five".