20120670 has 32 divisors (see below), whose sum is σ = 53655840. Its totient is φ = 5365440.

The previous prime is 20120657. The next prime is 20120713. The reversal of 20120670 is 7602102.

It is a happy number.

It is a super-2 number, since 2×20120670² = 809682722497800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36991 + ... + 37530.

It is an arithmetic number, because the mean of its divisors is an integer number (1676745).

Almost surely, 2^20120670 is an apocalyptic number.

20120670 is an abundant number, since it is smaller than the sum of its proper divisors (33535170).

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

20120670 is a wasteful number, since it uses less digits than its factorization.

20120670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74537 (or 74531 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 20120670 is about 4485.6069823381. The cubic root of 20120670 is about 271.9865820226.

Adding to 20120670 its reverse (7602102), we get a palindrome (27722772).

The spelling of 20120670 in words is "twenty million, one hundred twenty thousand, six hundred seventy".