20667552 has 48 divisors (see below), whose sum is σ = 54486432. Its totient is φ = 6859520.

The previous prime is 20667533. The next prime is 20667553. The reversal of 20667552 is 25576602.

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20667553) 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, 44023 + ... + 44489.

It is an arithmetic number, because the mean of its divisors is an integer number (1135134).

Almost surely, 2^20667552 is an apocalyptic number.

It is an amenable number.

20667552 is an abundant number, since it is smaller than the sum of its proper divisors (33818880).

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

20667552 is a wasteful number, since it uses less digits than its factorization.

20667552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941 (or 933 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 20667552 is about 4546.1579383035. The cubic root of 20667552 is about 274.4287956362.

The spelling of 20667552 in words is "twenty million, six hundred sixty-seven thousand, five hundred fifty-two".