40350618 has 72 divisors (see below), whose sum is σ = 110972160. Its totient is φ = 10478160.

The previous prime is 40350617. The next prime is 40350619. The reversal of 40350618 is 81605304.

40350618 is a `hidden beast` number, since 40 + 3 + 5 + 0 + 618 = 666.

It is an interprime number because it is at equal distance from previous prime (40350617) and next prime (40350619).

It is a nialpdrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 40350591 and 40350600.

It is not an unprimeable number, because it can be changed into a prime (40350617) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7623 + ... + 11781.

It is an arithmetic number, because the mean of its divisors is an integer number (1541280).

Almost surely, 2^40350618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40350618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55486080).

40350618 is an abundant number, since it is smaller than the sum of its proper divisors (70621542).

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

40350618 is a wasteful number, since it uses less digits than its factorization.

40350618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4192 (or 4182 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 40350618 is about 6352.2136299089. The cubic root of 40350618 is about 342.9915310973.

The spelling of 40350618 in words is "forty million, three hundred fifty thousand, six hundred eighteen".