33242405 has 16 divisors (see below), whose sum is σ = 45702144. Its totient is φ = 22738560.

The previous prime is 33242401. The next prime is 33242449. The reversal of 33242405 is 50424233.

It is not a de Polignac number, because 33242405 - 2² = 33242401 is a prime.

It is a super-2 number, since 2×33242405² = 2210114980368050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33242401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17324 + ... + 19146.

It is an arithmetic number, because the mean of its divisors is an integer number (2856384).

Almost surely, 2^33242405 is an apocalyptic number.

33242405 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

33242405 is a deficient number, since it is larger than the sum of its proper divisors (12459739).

33242405 is a wasteful number, since it uses less digits than its factorization.

33242405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2356.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 33242405 is about 5765.6226897014. The cubic root of 33242405 is about 321.5368939083.

Adding to 33242405 its reverse (50424233), we get a palindrome (83666638).

The spelling of 33242405 in words is "thirty-three million, two hundred forty-two thousand, four hundred five".