33450000 has 120 divisors (see below), whose sum is σ = 108493056. Its totient is φ = 8880000.

The previous prime is 33449993. The next prime is 33450031. The reversal of 33450000 is 5433.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×33450000² = 2237805000000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 149889 + ... + 150111.

Almost surely, 2^33450000 is an apocalyptic number.

33450000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33450000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54246528).

33450000 is an abundant number, since it is smaller than the sum of its proper divisors (75043056).

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

33450000 is an equidigital number, since it uses as much as digits as its factorization.

33450000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 15.

The square root of 33450000 is about 5783.5974963685. The cubic root of 33450000 is about 322.2048257662.

Adding to 33450000 its reverse (5433), we get a palindrome (33455433).

The spelling of 33450000 in words is "thirty-three million, four hundred fifty thousand".