20346572 has 24 divisors (see below), whose sum is σ = 36232560. Its totient is φ = 9996480.

The previous prime is 20346539. The next prime is 20346577. The reversal of 20346572 is 27564302.

It is not an unprimeable number, because it can be changed into a prime (20346577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112322 + ... + 112502.

It is an arithmetic number, because the mean of its divisors is an integer number (1509690).

Almost surely, 2^20346572 is an apocalyptic number.

It is an amenable number.

20346572 is a deficient number, since it is larger than the sum of its proper divisors (15885988).

20346572 is a wasteful number, since it uses less digits than its factorization.

20346572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521 (or 519 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 20346572 is about 4510.7174595623. The cubic root of 20346572 is about 273.0006932407. Note that the first 3 decimals are identical.

The spelling of 20346572 in words is "twenty million, three hundred forty-six thousand, five hundred seventy-two".