20732070 has 32 divisors (see below), whose sum is σ = 50577120. Its totient is φ = 5437440.

The previous prime is 20732053. The next prime is 20732081. The reversal of 20732070 is 7023702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3835 + ... + 7494.

It is an arithmetic number, because the mean of its divisors is an integer number (1580535).

Almost surely, 2^20732070 is an apocalyptic number.

20732070 is an abundant number, since it is smaller than the sum of its proper divisors (29845050).

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

20732070 is a wasteful number, since it uses less digits than its factorization.

20732070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11400.

The product of its (nonzero) digits is 588, while the sum is 21.

The square root of 20732070 is about 4553.2482910555. The cubic root of 20732070 is about 274.7140609165.

Adding to 20732070 its reverse (7023702), we get a palindrome (27755772).

The spelling of 20732070 in words is "twenty million, seven hundred thirty-two thousand, seventy".