33123428 has 24 divisors (see below), whose sum is σ = 62610240. Its totient is φ = 15242400.

The previous prime is 33123401. The next prime is 33123439. The reversal of 33123428 is 82432133.

It is a super-2 number, since 2×33123428² = 2194322964942368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 33123397 and 33123406.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22103 + ... + 23553.

It is an arithmetic number, because the mean of its divisors is an integer number (2608760).

Almost surely, 2^33123428 is an apocalyptic number.

It is an amenable number.

33123428 is a deficient number, since it is larger than the sum of its proper divisors (29486812).

33123428 is a wasteful number, since it uses less digits than its factorization.

33123428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1907 (or 1905 counting only the distinct ones).

The product of its digits is 3456, while the sum is 26.

The square root of 33123428 is about 5755.2956483573. The cubic root of 33123428 is about 321.1528339931.

The spelling of 33123428 in words is "thirty-three million, one hundred twenty-three thousand, four hundred twenty-eight".