812089652 has 24 divisors (see below), whose sum is σ = 1554850080. Its totient is φ = 368060960.

The previous prime is 812089637. The next prime is 812089657. The reversal of 812089652 is 256980218.

It is a super-2 number, since 2×812089652² = 1318979205770962208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812089657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11327 + ... + 41862.

It is an arithmetic number, because the mean of its divisors is an integer number (64785420).

Almost surely, 2^812089652 is an apocalyptic number.

It is an amenable number.

812089652 is a deficient number, since it is larger than the sum of its proper divisors (742760428).

812089652 is a wasteful number, since it uses less digits than its factorization.

812089652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53551 (or 53549 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 812089652 is about 28497.1867383431. The cubic root of 812089652 is about 932.9706726497.

The spelling of 812089652 in words is "eight hundred twelve million, eighty-nine thousand, six hundred fifty-two".