1020247870 has 16 divisors (see below), whose sum is σ = 1859693760. Its totient is φ = 402933024.

The previous prime is 1020247861. The next prime is 1020247897. The reversal of 1020247870 is 787420201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 644937 + ... + 646516.

It is an arithmetic number, because the mean of its divisors is an integer number (116230860).

Almost surely, 2^1020247870 is an apocalyptic number.

1020247870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1020247870 is a deficient number, since it is larger than the sum of its proper divisors (839445890).

1020247870 is a wasteful number, since it uses less digits than its factorization.

1020247870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291539.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 1020247870 is about 31941.3191649938. The cubic root of 1020247870 is about 1006.7042426851.

The spelling of 1020247870 in words is "one billion, twenty million, two hundred forty-seven thousand, eight hundred seventy".