1012162620 has 72 divisors (see below), whose sum is σ = 3296767824. Its totient is φ = 231350784.

The previous prime is 1012162603. The next prime is 1012162637. The reversal of 1012162620 is 262612101.

It is an interprime number because it is at equal distance from previous prime (1012162603) and next prime (1012162637).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 169197 + ... + 175076.

It is an arithmetic number, because the mean of its divisors is an integer number (45788442).

Almost surely, 2^1012162620 is an apocalyptic number.

1012162620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012162620 is an abundant number, since it is smaller than the sum of its proper divisors (2284605204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1012162620 is a wasteful number, since it uses less digits than its factorization.

1012162620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344299 (or 344290 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1012162620 is about 31814.5032964527. The cubic root of 1012162620 is about 1004.0378802446.

Adding to 1012162620 its reverse (262612101), we get a palindrome (1274774721).

The spelling of 1012162620 in words is "one billion, twelve million, one hundred sixty-two thousand, six hundred twenty".