33528730 has 16 divisors (see below), whose sum is σ = 63528480. Its totient is φ = 12705552.

The previous prime is 33528721. The next prime is 33528731. The reversal of 33528730 is 3782533.

It is a super-2 number, since 2×33528730² = 2248351470825800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33528692 and 33528701.

It is not an unprimeable number, because it can be changed into a prime (33528731) 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, 88044 + ... + 88423.

It is an arithmetic number, because the mean of its divisors is an integer number (3970530).

Almost surely, 2^33528730 is an apocalyptic number.

33528730 is a deficient number, since it is larger than the sum of its proper divisors (29999750).

33528730 is a wasteful number, since it uses less digits than its factorization.

33528730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176493.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 33528730 is about 5790.3998134844. The cubic root of 33528730 is about 322.4574148045.

The spelling of 33528730 in words is "thirty-three million, five hundred twenty-eight thousand, seven hundred thirty".