1022505140 has 24 divisors (see below), whose sum is σ = 2260275360. Its totient is φ = 387475488.

The previous prime is 1022505073. The next prime is 1022505167. The reversal of 1022505140 is 415052201.

1022505140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1022505140² = 2091033522652839200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 1345022 + ... + 1345781.

It is an arithmetic number, because the mean of its divisors is an integer number (94178140).

Almost surely, 2^1022505140 is an apocalyptic number.

1022505140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022505140 is an abundant number, since it is smaller than the sum of its proper divisors (1237770220).

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

1022505140 is a wasteful number, since it uses less digits than its factorization.

1022505140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2690831 (or 2690829 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 1022505140 is about 31976.6342819253. The cubic root of 1022505140 is about 1007.4461308521.

Adding to 1022505140 its reverse (415052201), we get a palindrome (1437557341).

The spelling of 1022505140 in words is "one billion, twenty-two million, five hundred five thousand, one hundred forty".