40257046 has 8 divisors (see below), whose sum is σ = 62467920. Its totient is φ = 19434408.

The previous prime is 40257031. The next prime is 40257059. The reversal of 40257046 is 64075204.

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

It is a super-2 number, since 2×40257046² = 3241259505292232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346986 + ... + 347101.

It is an arithmetic number, because the mean of its divisors is an integer number (7808490).

Almost surely, 2^40257046 is an apocalyptic number.

40257046 is a deficient number, since it is larger than the sum of its proper divisors (22210874).

40257046 is a wasteful number, since it uses less digits than its factorization.

40257046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694118.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 40257046 is about 6344.8440485169. The cubic root of 40257046 is about 342.7261965057.

The spelling of 40257046 in words is "forty million, two hundred fifty-seven thousand, forty-six".