33428016 has 60 divisors (see below), whose sum is σ = 97629168. Its totient is φ = 10657152.

The previous prime is 33428009. The next prime is 33428023. The reversal of 33428016 is 61082433.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (33428009) and next prime (33428023).

It is a super-2 number, since 2×33428016² = 2234864507392512, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1735 + ... + 8358.

Almost surely, 2^33428016 is an apocalyptic number.

33428016 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

33428016 is an abundant number, since it is smaller than the sum of its proper divisors (64201152).

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

33428016 is a wasteful number, since it uses less digits than its factorization.

33428016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10130 (or 10121 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 33428016 is about 5781.6966368013. The cubic root of 33428016 is about 322.1342238407.

The spelling of 33428016 in words is "thirty-three million, four hundred twenty-eight thousand, sixteen".