23402149 has 8 divisors (see below), whose sum is σ = 24822720. Its totient is φ = 21986496.

The previous prime is 23402143. The next prime is 23402161. The reversal of 23402149 is 94120432.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23402149 - 2¹³ = 23393957 is a prime.

It is a super-3 number, since 3×23402149³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23402143) 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, 14232 + ... + 15790.

It is an arithmetic number, because the mean of its divisors is an integer number (3102840).

Almost surely, 2^23402149 is an apocalyptic number.

It is an amenable number.

23402149 is a deficient number, since it is larger than the sum of its proper divisors (1420571).

23402149 is a wasteful number, since it uses less digits than its factorization.

23402149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2459.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 23402149 is about 4837.5767694167. The cubic root of 23402149 is about 286.0346063068.

It can be divided in two parts, 2340 and 2149, that added together give a square (4489 = 67²).

The spelling of 23402149 in words is "twenty-three million, four hundred two thousand, one hundred forty-nine".