20756070 has 48 divisors (see below), whose sum is σ = 54271152. Its totient is φ = 5503680.

The previous prime is 20756063. The next prime is 20756089. The reversal of 20756070 is 7065702.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18444 + ... + 19536.

It is an arithmetic number, because the mean of its divisors is an integer number (1130649).

Almost surely, 2^20756070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20756070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27135576).

20756070 is an abundant number, since it is smaller than the sum of its proper divisors (33515082).

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

20756070 is a wasteful number, since it uses less digits than its factorization.

20756070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317 (or 1314 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 20756070 is about 4555.8830099115. The cubic root of 20756070 is about 274.8200254916.

The spelling of 20756070 in words is "twenty million, seven hundred fifty-six thousand, seventy".