20623070 has 24 divisors (see below), whose sum is σ = 40199976. Its totient is φ = 7614048.

The previous prime is 20623067. The next prime is 20623079. The reversal of 20623070 is 7032602.

It is a super-2 number, since 2×20623070² = 850622032449800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20623079) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4412 + ... + 7791.

It is an arithmetic number, because the mean of its divisors is an integer number (1674999).

Almost surely, 2^20623070 is an apocalyptic number.

20623070 is a deficient number, since it is larger than the sum of its proper divisors (19576906).

20623070 is a wasteful number, since it uses less digits than its factorization.

20623070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12236 (or 12223 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 20623070 is about 4541.2630401685. The cubic root of 20623070 is about 274.2317732727.

Adding to 20623070 its reverse (7032602), we get a palindrome (27655672).

The spelling of 20623070 in words is "twenty million, six hundred twenty-three thousand, seventy".