33630420 has 48 divisors (see below), whose sum is σ = 99707328. Its totient is φ = 8440320.

The previous prime is 33630391. The next prime is 33630431. The reversal of 33630420 is 2403633.

It is a super-2 number, since 2×33630420² = 2262010298752800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15466 + ... + 17505.

It is an arithmetic number, because the mean of its divisors is an integer number (2077236).

Almost surely, 2^33630420 is an apocalyptic number.

33630420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33630420 is an abundant number, since it is smaller than the sum of its proper divisors (66076908).

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

33630420 is a wasteful number, since it uses less digits than its factorization.

33630420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33000 (or 32998 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 33630420 is about 5799.1740791254. The cubic root of 33630420 is about 322.7830817745.

The spelling of 33630420 in words is "thirty-three million, six hundred thirty thousand, four hundred twenty".