40274821 has 8 divisors (see below), whose sum is σ = 41083200. Its totient is φ = 39473280.

The previous prime is 40274809. The next prime is 40274827. The reversal of 40274821 is 12847204.

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 40274821 - 2¹¹ = 40272773 is a prime.

It is a super-2 number, since 2×40274821² = 3244122413164082, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40274821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40274827) 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, 11125 + ... + 14293.

It is an arithmetic number, because the mean of its divisors is an integer number (5135400).

Almost surely, 2^40274821 is an apocalyptic number.

It is an amenable number.

40274821 is a deficient number, since it is larger than the sum of its proper divisors (808379).

40274821 is a wasteful number, since it uses less digits than its factorization.

40274821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3419.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 40274821 is about 6346.2446375790. The cubic root of 40274821 is about 342.7766312524.

The spelling of 40274821 in words is "forty million, two hundred seventy-four thousand, eight hundred twenty-one".