23780401 has 4 divisors (see below), whose sum is σ = 23803252. Its totient is φ = 23757552.

The previous prime is 23780359. The next prime is 23780431. The reversal of 23780401 is 10408732.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22810176 + 970225 = 4776^2 + 985^2 .

It is a cyclic number.

It is not a de Polignac number, because 23780401 - 2¹³ = 23772209 is a prime.

It is a super-3 number, since 3×23780401³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23780431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9786 + ... + 11971.

It is an arithmetic number, because the mean of its divisors is an integer number (5950813).

Almost surely, 2^23780401 is an apocalyptic number.

It is an amenable number.

23780401 is a deficient number, since it is larger than the sum of its proper divisors (22851).

23780401 is a wasteful number, since it uses less digits than its factorization.

23780401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22850.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 23780401 is about 4876.5152516936. The cubic root of 23780401 is about 287.5674488252.

The spelling of 23780401 in words is "twenty-three million, seven hundred eighty thousand, four hundred one".