28742496 has 24 divisors (see below), whose sum is σ = 75449304. Its totient is φ = 9580800.

The previous prime is 28742489. The next prime is 28742503. The reversal of 28742496 is 69424782.

It is an interprime number because it is at equal distance from previous prime (28742489) and next prime (28742503).

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×28742496² = 1652262152620032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149605 + ... + 149796.

It is an arithmetic number, because the mean of its divisors is an integer number (3143721).

Almost surely, 2^28742496 is an apocalyptic number.

It is an amenable number.

28742496 is an abundant number, since it is smaller than the sum of its proper divisors (46706808).

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

28742496 is a wasteful number, since it uses less digits than its factorization.

28742496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299414 (or 299406 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 28742496 is about 5361.2028501074. The cubic root of 28742496 is about 306.3196284275.

The spelling of 28742496 in words is "twenty-eight million, seven hundred forty-two thousand, four hundred ninety-six".