28153402 has 16 divisors (see below), whose sum is σ = 44890560. Its totient is φ = 13204512.

The previous prime is 28153393. The next prime is 28153409. The reversal of 28153402 is 20435182.

It is a super-2 number, since 2×28153402² = 1585228088347208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28153409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318 + ... + 7510.

It is an arithmetic number, because the mean of its divisors is an integer number (2805660).

Almost surely, 2^28153402 is an apocalyptic number.

28153402 is a deficient number, since it is larger than the sum of its proper divisors (16737158).

28153402 is a wasteful number, since it uses less digits than its factorization.

28153402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7317.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 28153402 is about 5305.9779494453. The cubic root of 28153402 is about 304.2124337546.

Adding to 28153402 its reverse (20435182), we get a palindrome (48588584).

The spelling of 28153402 in words is "twenty-eight million, one hundred fifty-three thousand, four hundred two".