89742428 has 6 divisors (see below), whose sum is σ = 157049256. Its totient is φ = 44871212.

The previous prime is 89742379. The next prime is 89742437. The reversal of 89742428 is 82424798.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11217800 + ... + 11217807.

It is an arithmetic number, because the mean of its divisors is an integer number (26174876).

Almost surely, 2^89742428 is an apocalyptic number.

It is an amenable number.

89742428 is a deficient number, since it is larger than the sum of its proper divisors (67306828).

89742428 is a wasteful number, since it uses less digits than its factorization.

89742428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22435611 (or 22435609 counting only the distinct ones).

The product of its digits is 258048, while the sum is 44.

The square root of 89742428 is about 9473.2480174436. The cubic root of 89742428 is about 447.7125534370.

The spelling of 89742428 in words is "eighty-nine million, seven hundred forty-two thousand, four hundred twenty-eight".