23435140 has 48 divisors (see below), whose sum is σ = 50948352. Its totient is φ = 9049856.

The previous prime is 23435077. The next prime is 23435147. The reversal of 23435140 is 4153432.

23435140 = 683² + 684² + ... + 729².

It is not an unprimeable number, because it can be changed into a prime (23435147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100464 + ... + 100696.

It is an arithmetic number, because the mean of its divisors is an integer number (1061424).

Almost surely, 2^23435140 is an apocalyptic number.

23435140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23435140 is an abundant number, since it is smaller than the sum of its proper divisors (27513212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23435140 is a wasteful number, since it uses less digits than its factorization.

23435140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396 (or 394 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 23435140 is about 4840.9854368713. The cubic root of 23435140 is about 286.1689548915.

Adding to 23435140 its reverse (4153432), we get a palindrome (27588572).

The spelling of 23435140 in words is "twenty-three million, four hundred thirty-five thousand, one hundred forty".