20654542 has 8 divisors (see below), whose sum is σ = 31020696. Its totient is φ = 10314312.

The previous prime is 20654537. The next prime is 20654551. The reversal of 20654542 is 24545602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20654542² = 853220210459528, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20654542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4348 + ... + 7759.

It is an arithmetic number, because the mean of its divisors is an integer number (3877587).

Almost surely, 2^20654542 is an apocalyptic number.

20654542 is a deficient number, since it is larger than the sum of its proper divisors (10366154).

20654542 is a wasteful number, since it uses less digits than its factorization.

20654542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12962.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 20654542 is about 4544.7268344753. The cubic root of 20654542 is about 274.3712002317.

The spelling of 20654542 in words is "twenty million, six hundred fifty-four thousand, five hundred forty-two".