23287977 has 24 divisors (see below), whose sum is σ = 37496160. Its totient is φ = 13841280.

The previous prime is 23287969. The next prime is 23287987. The reversal of 23287977 is 77978232.

It is not a de Polignac number, because 23287977 - 2³ = 23287969 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23287987) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1099 + ... + 6912.

It is an arithmetic number, because the mean of its divisors is an integer number (1562340).

Almost surely, 2^23287977 is an apocalyptic number.

It is an amenable number.

23287977 is a deficient number, since it is larger than the sum of its proper divisors (14208183).

23287977 is a wasteful number, since it uses less digits than its factorization.

23287977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8053 (or 8050 counting only the distinct ones).

The product of its digits is 296352, while the sum is 45.

The square root of 23287977 is about 4825.7618051454. The cubic root of 23287977 is about 285.5686890444.

It can be divided in two parts, 232 and 87977, that added together give a square (88209 = 297²).

The spelling of 23287977 in words is "twenty-three million, two hundred eighty-seven thousand, nine hundred seventy-seven".