20361154 has 12 divisors (see below), whose sum is σ = 33571062. Its totient is φ = 9254960.

The previous prime is 20361139. The next prime is 20361157. The reversal of 20361154 is 45116302.

It can be written as a sum of positive squares in only one way, i.e., 14235529 + 6125625 = 3773^2 + 2475^2 .

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (20361157) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41827 + ... + 42310.

Almost surely, 2^20361154 is an apocalyptic number.

20361154 is a deficient number, since it is larger than the sum of its proper divisors (13209908).

20361154 is a wasteful number, since it uses less digits than its factorization.

20361154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84161 (or 84150 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 20361154 is about 4512.3335426362. Note that the first 3 decimals coincide. The cubic root of 20361154 is about 273.0658957963.

Adding to 20361154 its reverse (45116302), we get a palindrome (65477456).

The spelling of 20361154 in words is "twenty million, three hundred sixty-one thousand, one hundred fifty-four".