33428351 has 8 divisors (see below), whose sum is σ = 36509184. Its totient is φ = 30354520.

The previous prime is 33428293. The next prime is 33428357. The reversal of 33428351 is 15382433.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33428351 - 2⁶ = 33428287 is a prime.

It is a super-2 number, since 2×33428351² = 2234909301158402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33428357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17426 + ... + 19248.

It is an arithmetic number, because the mean of its divisors is an integer number (4563648).

Almost surely, 2^33428351 is an apocalyptic number.

33428351 is a deficient number, since it is larger than the sum of its proper divisors (3080833).

33428351 is a wasteful number, since it uses less digits than its factorization.

33428351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3501.

The product of its digits is 8640, while the sum is 29.

The square root of 33428351 is about 5781.7256074636. The cubic root of 33428351 is about 322.1352999301.

The spelling of 33428351 in words is "thirty-three million, four hundred twenty-eight thousand, three hundred fifty-one".