20770552 has 32 divisors (see below), whose sum is σ = 42709680. Its totient is φ = 9391360.

The previous prime is 20770523. The next prime is 20770567. The reversal of 20770552 is 25507702.

It is a self number, because there is not a number n which added to its sum of digits gives 20770552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19998 + ... + 21010.

Almost surely, 2^20770552 is an apocalyptic number.

20770552 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20770552 is an abundant number, since it is smaller than the sum of its proper divisors (21939128).

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

20770552 is a wasteful number, since it uses less digits than its factorization.

20770552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263 (or 1259 counting only the distinct ones).

The product of its (nonzero) digits is 4900, while the sum is 28.

The square root of 20770552 is about 4557.4721063326. The cubic root of 20770552 is about 274.8839267718.

The spelling of 20770552 in words is "twenty million, seven hundred seventy thousand, five hundred fifty-two".