28949132 has 6 divisors (see below), whose sum is σ = 50660988. Its totient is φ = 14474564.

The previous prime is 28949101. The next prime is 28949143. The reversal of 28949132 is 23194982.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3618638 + ... + 3618645.

It is an arithmetic number, because the mean of its divisors is an integer number (8443498).

Almost surely, 2^28949132 is an apocalyptic number.

It is an amenable number.

28949132 is a deficient number, since it is larger than the sum of its proper divisors (21711856).

28949132 is a wasteful number, since it uses less digits than its factorization.

28949132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7237287 (or 7237285 counting only the distinct ones).

The product of its digits is 31104, while the sum is 38.

The square root of 28949132 is about 5380.4397589788. The cubic root of 28949132 is about 307.0519422487.

The spelling of 28949132 in words is "twenty-eight million, nine hundred forty-nine thousand, one hundred thirty-two".