20417372 has 6 divisors (see below), whose sum is σ = 35730408. Its totient is φ = 10208684.

The previous prime is 20417359. The next prime is 20417387. The reversal of 20417372 is 27371402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2552168 + ... + 2552175.

It is an arithmetic number, because the mean of its divisors is an integer number (5955068).

Almost surely, 2^20417372 is an apocalyptic number.

It is an amenable number.

20417372 is a deficient number, since it is larger than the sum of its proper divisors (15313036).

20417372 is a wasteful number, since it uses less digits than its factorization.

20417372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5104347 (or 5104345 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 20417372 is about 4518.5586197371. The cubic root of 20417372 is about 273.3169803159.

Adding to 20417372 its reverse (27371402), we get a palindrome (47788774).

It can be divided in two parts, 204 and 17372, that added together give a cube (17576 = 26³).

The spelling of 20417372 in words is "twenty million, four hundred seventeen thousand, three hundred seventy-two".