33430340 has 12 divisors (see below), whose sum is σ = 70203756. Its totient is φ = 13372128.

The previous prime is 33430321. The next prime is 33430349. The reversal of 33430340 is 4303433.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19784704 + 13645636 = 4448^2 + 3694^2 .

It is a super-2 number, since 2×33430340² = 2235175265031200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1671517 = 33430340 / (3 + 3 + 4 + 3 + 0 + 3 + 4 + 0).

It is not an unprimeable number, because it can be changed into a prime (33430349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 835739 + ... + 835778.

It is an arithmetic number, because the mean of its divisors is an integer number (5850313).

Almost surely, 2^33430340 is an apocalyptic number.

It is an amenable number.

33430340 is an abundant number, since it is smaller than the sum of its proper divisors (36773416).

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

33430340 is a wasteful number, since it uses less digits than its factorization.

33430340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1671526 (or 1671524 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 20.

The square root of 33430340 is about 5781.8976123761. The cubic root of 33430340 is about 322.1416888623.

Adding to 33430340 its reverse (4303433), we get a palindrome (37733773).

It can be divided in two parts, 3 and 3430340, that added together give a palindrome (3430343).

The spelling of 33430340 in words is "thirty-three million, four hundred thirty thousand, three hundred forty".