28942416 has 30 divisors (see below), whose sum is σ = 80998970. Its totient is φ = 9647424.

The previous prime is 28942393. The next prime is 28942429. The reversal of 28942416 is 61424982.

It can be written as a sum of positive squares in only one way, i.e., 28132416 + 810000 = 5304^2 + 900^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 100351 + ... + 100638.

Almost surely, 2^28942416 is an apocalyptic number.

It is an amenable number.

28942416 is an abundant number, since it is smaller than the sum of its proper divisors (52056554).

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

28942416 is a wasteful number, since it uses less digits than its factorization.

28942416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201003 (or 200994 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 28942416 is about 5379.8156102231. The cubic root of 28942416 is about 307.0281957643.

The spelling of 28942416 in words is "twenty-eight million, nine hundred forty-two thousand, four hundred sixteen".