1020500087 has 16 divisors (see below), whose sum is σ = 1076689152. Its totient is φ = 965352960.

The previous prime is 1020500027. The next prime is 1020500101. The reversal of 1020500087 is 7800050201.

It is a cyclic number.

It is not a de Polignac number, because 1020500087 - 2¹² = 1020495991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020500017) 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, 1738208 + ... + 1738794.

It is an arithmetic number, because the mean of its divisors is an integer number (67293072).

Almost surely, 2^1020500087 is an apocalyptic number.

1020500087 is a deficient number, since it is larger than the sum of its proper divisors (56189065).

1020500087 is a wasteful number, since it uses less digits than its factorization.

1020500087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 1020500087 is about 31945.2670516307. The cubic root of 1020500087 is about 1006.7871921367.

Adding to 1020500087 its reverse (7800050201), we get a palindrome (8820550288).

The spelling of 1020500087 in words is "one billion, twenty million, five hundred thousand, eighty-seven".