623542236 has 24 divisors (see below), whose sum is σ = 1518190464. Its totient is φ = 198810480.

The previous prime is 623542219. The next prime is 623542237. The reversal of 623542236 is 632245326.

It is a junction number, because it is equal to n+sod(n) for n = 623542197 and 623542206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623542237) 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, 1129330 + ... + 1129881.

It is an arithmetic number, because the mean of its divisors is an integer number (63257936).

Almost surely, 2^623542236 is an apocalyptic number.

It is an amenable number.

623542236 is an abundant number, since it is smaller than the sum of its proper divisors (894648228).

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

623542236 is a wasteful number, since it uses less digits than its factorization.

623542236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2259241 (or 2259239 counting only the distinct ones).

The product of its digits is 51840, while the sum is 33.

The square root of 623542236 is about 24970.8276995377. The cubic root of 623542236 is about 854.3227248229.

The spelling of 623542236 in words is "six hundred twenty-three million, five hundred forty-two thousand, two hundred thirty-six".