1022147652 has 12 divisors (see below), whose sum is σ = 2385011216. Its totient is φ = 340715880.

The previous prime is 1022147639. The next prime is 1022147657. The reversal of 1022147652 is 2567412201.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1022147652² = 2089571644978226208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1022147657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42589474 + ... + 42589497.

Almost surely, 2^1022147652 is an apocalyptic number.

1022147652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1022147652 is an abundant number, since it is smaller than the sum of its proper divisors (1362863564).

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

1022147652 is a wasteful number, since it uses less digits than its factorization.

1022147652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85178978 (or 85178976 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 1022147652 is about 31971.0439616851. The cubic root of 1022147652 is about 1007.3287094758.

Adding to 1022147652 its reverse (2567412201), we get a palindrome (3589559853).

The spelling of 1022147652 in words is "one billion, twenty-two million, one hundred forty-seven thousand, six hundred fifty-two".