33428451 has 16 divisors (see below), whose sum is σ = 51393024. Its totient is φ = 18931584.

The previous prime is 33428441. The next prime is 33428471. The reversal of 33428451 is 15482433.

It is not a de Polignac number, because 33428451 - 2¹⁵ = 33395683 is a prime.

It is a super-2 number, since 2×33428451² = 2234922672518802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33428441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4671 + ... + 9416.

It is an arithmetic number, because the mean of its divisors is an integer number (3212064).

Almost surely, 2^33428451 is an apocalyptic number.

33428451 is a deficient number, since it is larger than the sum of its proper divisors (17964573).

33428451 is a wasteful number, since it uses less digits than its factorization.

33428451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14210.

The product of its digits is 11520, while the sum is 30.

The square root of 33428451 is about 5781.7342553943. The cubic root of 33428451 is about 322.1356211494.

The spelling of 33428451 in words is "thirty-three million, four hundred twenty-eight thousand, four hundred fifty-one".