20070015 has 16 divisors (see below), whose sum is σ = 36699648. Its totient is φ = 9174816.

The previous prime is 20069999. The next prime is 20070031. The reversal of 20070015 is 51007002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20069999) and next prime (20070031).

It is not a de Polignac number, because 20070015 - 2⁴ = 20069999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 20069976 and 20070003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95467 + ... + 95676.

It is an arithmetic number, because the mean of its divisors is an integer number (2293728).

Almost surely, 2^20070015 is an apocalyptic number.

20070015 is a deficient number, since it is larger than the sum of its proper divisors (16629633).

20070015 is a wasteful number, since it uses less digits than its factorization.

20070015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191158.

The product of its (nonzero) digits is 70, while the sum is 15.

The square root of 20070015 is about 4479.9570310439. The cubic root of 20070015 is about 271.7581426716.

Adding to 20070015 its reverse (51007002), we get a palindrome (71077017).

It can be divided in two parts, 2007001 and 5, that added together give a triangular number (2007006 = T₂₀₀₃).

The spelling of 20070015 in words is "twenty million, seventy thousand, fifteen".