20629701 has 16 divisors (see below), whose sum is σ = 31617600. Its totient is φ = 13278384.

The previous prime is 20629699. The next prime is 20629703. The reversal of 20629701 is 10792602.

It is an interprime number because it is at equal distance from previous prime (20629699) and next prime (20629703).

It is not a de Polignac number, because 20629701 - 2¹ = 20629699 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20629703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12391 + ... + 13956.

It is an arithmetic number, because the mean of its divisors is an integer number (1976100).

Almost surely, 2^20629701 is an apocalyptic number.

It is an amenable number.

20629701 is a deficient number, since it is larger than the sum of its proper divisors (10987899).

20629701 is a wasteful number, since it uses less digits than its factorization.

20629701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26385 (or 26379 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 20629701 is about 4541.9930647239. The cubic root of 20629701 is about 274.2611616555.

The spelling of 20629701 in words is "twenty million, six hundred twenty-nine thousand, seven hundred one".