20578070 has 8 divisors (see below), whose sum is σ = 37040544. Its totient is φ = 8231224.

The previous prime is 20578067. The next prime is 20578073. The reversal of 20578070 is 7087502.

It is an interprime number because it is at equal distance from previous prime (20578067) and next prime (20578073).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20578073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1028894 + ... + 1028913.

It is an arithmetic number, because the mean of its divisors is an integer number (4630068).

Almost surely, 2^20578070 is an apocalyptic number.

20578070 is a deficient number, since it is larger than the sum of its proper divisors (16462474).

20578070 is a wasteful number, since it uses less digits than its factorization.

20578070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2057814.

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 20578070 is about 4536.3057657085. The cubic root of 20578070 is about 274.0321680669.

The spelling of 20578070 in words is "twenty million, five hundred seventy-eight thousand, seventy".