33153940 has 12 divisors (see below), whose sum is σ = 69623316. Its totient is φ = 13261568.

The previous prime is 33153937. The next prime is 33153943. The reversal of 33153940 is 4935133.

It is an interprime number because it is at equal distance from previous prime (33153937) and next prime (33153943).

It can be written as a sum of positive squares in 2 ways, for example, as 15023376 + 18130564 = 3876^2 + 4258^2 .

It is a junction number, because it is equal to n+sod(n) for n = 33153899 and 33153908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33153943) 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, 828829 + ... + 828868.

It is an arithmetic number, because the mean of its divisors is an integer number (5801943).

Almost surely, 2^33153940 is an apocalyptic number.

It is an amenable number.

33153940 is an abundant number, since it is smaller than the sum of its proper divisors (36469376).

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

33153940 is a wasteful number, since it uses less digits than its factorization.

33153940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1657706 (or 1657704 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 33153940 is about 5757.9458142640. The cubic root of 33153940 is about 321.2514148524.

The spelling of 33153940 in words is "thirty-three million, one hundred fifty-three thousand, nine hundred forty".