40257623 has 8 divisors (see below), whose sum is σ = 47493120. Its totient is φ = 33393240.

The previous prime is 40257601. The next prime is 40257631. The reversal of 40257623 is 32675204.

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 40257623 - 2¹⁴ = 40241239 is a prime.

It is a super-2 number, since 2×40257623² = 3241352419220258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40257023) 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, 92543 + ... + 92976.

It is an arithmetic number, because the mean of its divisors is an integer number (5936640).

Almost surely, 2^40257623 is an apocalyptic number.

40257623 is a deficient number, since it is larger than the sum of its proper divisors (7235497).

40257623 is a wasteful number, since it uses less digits than its factorization.

40257623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185557.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 40257623 is about 6344.8895183447. The cubic root of 40257623 is about 342.7278339174.

The spelling of 40257623 in words is "forty million, two hundred fifty-seven thousand, six hundred twenty-three".