33712130 has 16 divisors (see below), whose sum is σ = 61514424. Its totient is φ = 13299840.

The previous prime is 33712121. The next prime is 33712141. The reversal of 33712130 is 3121733.

It is a happy number.

33712130 is nontrivially palindromic in base 8.

It can be written as a sum of positive squares in 4 ways, for example, as 31281649 + 2430481 = 5593^2 + 1559^2 .

It is a super-2 number, since 2×33712130² = 2273015418273800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22361 + ... + 23820.

Almost surely, 2^33712130 is an apocalyptic number.

33712130 is a deficient number, since it is larger than the sum of its proper divisors (27802294).

33712130 is a wasteful number, since it uses less digits than its factorization.

33712130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46261.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 33712130 is about 5806.2147738436. The cubic root of 33712130 is about 323.0442865021.

Adding to 33712130 its reverse (3121733), we get a palindrome (36833863).

The spelling of 33712130 in words is "thirty-three million, seven hundred twelve thousand, one hundred thirty".