1117561236 has 48 divisors (see below), whose sum is σ = 2891356608. Its totient is φ = 333100800.

The previous prime is 1117561217. The next prime is 1117561241. The reversal of 1117561236 is 6321657111.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 1117561197 and 1117561206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61345 + ... + 77448.

It is an arithmetic number, because the mean of its divisors is an integer number (60236596).

Almost surely, 2^1117561236 is an apocalyptic number.

It is an amenable number.

1117561236 is an abundant number, since it is smaller than the sum of its proper divisors (1773795372).

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

1117561236 is a wasteful number, since it uses less digits than its factorization.

1117561236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138872 (or 138870 counting only the distinct ones).

The product of its digits is 7560, while the sum is 33.

The square root of 1117561236 is about 33429.9451988782. The cubic root of 1117561236 is about 1037.7445066734.

The spelling of 1117561236 in words is "one billion, one hundred seventeen million, five hundred sixty-one thousand, two hundred thirty-six".