40620881 has 8 divisors (see below), whose sum is σ = 47921664. Its totient is φ = 33694560.

The previous prime is 40620869. The next prime is 40620889. The reversal of 40620881 is 18802604.

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 40620881 - 2⁶ = 40620817 is a prime.

It is a super-2 number, since 2×40620881² = 3300111946432322, which contains 22 as substring.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (40620889) 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, 93380 + ... + 93813.

It is an arithmetic number, because the mean of its divisors is an integer number (5990208).

Almost surely, 2^40620881 is an apocalyptic number.

It is an amenable number.

40620881 is a deficient number, since it is larger than the sum of its proper divisors (7300783).

40620881 is a wasteful number, since it uses less digits than its factorization.

40620881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187231.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 40620881 is about 6373.4512628559. The cubic root of 40620881 is about 343.7555981017.

The spelling of 40620881 in words is "forty million, six hundred twenty thousand, eight hundred eighty-one".