23049490 has 16 divisors (see below), whose sum is σ = 42920280. Its totient is φ = 8901760.

The previous prime is 23049479. The next prime is 23049491. The reversal of 23049490 is 9494032.

It can be written as a sum of positive squares in 4 ways, for example, as 18584721 + 4464769 = 4311^2 + 2113^2 .

It is not an unprimeable number, because it can be changed into a prime (23049491) 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, 39451 + ... + 40030.

Almost surely, 2^23049490 is an apocalyptic number.

23049490 is a deficient number, since it is larger than the sum of its proper divisors (19870790).

23049490 is a wasteful number, since it uses less digits than its factorization.

23049490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79517.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 23049490 is about 4800.9884398944. The cubic root of 23049490 is about 284.5905271880.

The spelling of 23049490 in words is "twenty-three million, forty-nine thousand, four hundred ninety".