10020256 has 12 divisors (see below), whose sum is σ = 19727442. Its totient is φ = 5010112.

The previous prime is 10020253. The next prime is 10020271. The reversal of 10020256 is 65202001.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7075600 + 2944656 = 2660^2 + 1716^2 .

It is a hoax number, since the sum of its digits (16) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (10020253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156535 + ... + 156598.

Almost surely, 2^10020256 is an apocalyptic number.

10020256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

10020256 is a deficient number, since it is larger than the sum of its proper divisors (9707186).

10020256 is an equidigital number, since it uses as much as digits as its factorization.

10020256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313143 (or 313135 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 10020256 is about 3165.4787947481. The cubic root of 10020256 is about 215.5888383242.

Adding to 10020256 its reverse (65202001), we get a palindrome (75222257).

The spelling of 10020256 in words is "ten million, twenty thousand, two hundred fifty-six".