1012227840 has 360 divisors, whose sum is σ = 3905740608. Its totient is φ = 248832000.

The previous prime is 1012227829. The next prime is 1012227847. The reversal of 1012227840 is 487222101.

It is a tau number, because it is divible by the number of its divisors (360).

It is a hoax number, since the sum of its digits (27) 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 (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012227847) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1347465 + ... + 1348215.

Almost surely, 2^1012227840 is an apocalyptic number.

1012227840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1012227840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1952870304).

1012227840 is an abundant number, since it is smaller than the sum of its proper divisors (2893512768).

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

1012227840 is an equidigital number, since it uses as much as digits as its factorization.

1012227840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797 (or 774 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 1012227840 is about 31815.5282841571. The cubic root of 1012227840 is about 1004.0594452721.

Adding to 1012227840 its reverse (487222101), we get a palindrome (1499449941).

The spelling of 1012227840 in words is "one billion, twelve million, two hundred twenty-seven thousand, eight hundred forty".