28742160 has 40 divisors (see below), whose sum is σ = 89101440. Its totient is φ = 7664512.

The previous prime is 28742137. The next prime is 28742173. The reversal of 28742160 is 6124782.

28742160 is nontrivially palindromic in base 13.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×28742160² = 1652223522931200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59640 + ... + 60119.

It is an arithmetic number, because the mean of its divisors is an integer number (2227536).

Almost surely, 2^28742160 is an apocalyptic number.

28742160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28742160 is an abundant number, since it is smaller than the sum of its proper divisors (60359280).

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

28742160 is a wasteful number, since it uses less digits than its factorization.

28742160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119775 (or 119769 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 28742160 is about 5361.1715137645. The cubic root of 28742160 is about 306.3184347966.

The spelling of 28742160 in words is "twenty-eight million, seven hundred forty-two thousand, one hundred sixty".