20701356 has 24 divisors (see below), whose sum is σ = 52019184. Its totient is φ = 6369600.

The previous prime is 20701349. The next prime is 20701363. The reversal of 20701356 is 65310702.

It is an interprime number because it is at equal distance from previous prime (20701349) and next prime (20701363).

It is a super-2 number, since 2×20701356² = 857092280477472, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66195 + ... + 66506.

It is an arithmetic number, because the mean of its divisors is an integer number (2167466).

Almost surely, 2^20701356 is an apocalyptic number.

20701356 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20701356 is an abundant number, since it is smaller than the sum of its proper divisors (31317828).

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

20701356 is a wasteful number, since it uses less digits than its factorization.

20701356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132721 (or 132719 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 20701356 is about 4549.8742839775. The cubic root of 20701356 is about 274.5783333894.

The spelling of 20701356 in words is "twenty million, seven hundred one thousand, three hundred fifty-six".