40067730 has 32 divisors (see below), whose sum is σ = 106848000. Its totient is φ = 10684656.

The previous prime is 40067719. The next prime is 40067749. The reversal of 40067730 is 3776004.

40067730 = 90² + 91² + ... + 494².

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 40067694 and 40067703.

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 15 ways as a sum of consecutive naturals, for example, 73930 + ... + 74469.

It is an arithmetic number, because the mean of its divisors is an integer number (3339000).

Almost surely, 2^40067730 is an apocalyptic number.

40067730 is an abundant number, since it is smaller than the sum of its proper divisors (66780270).

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

40067730 is a wasteful number, since it uses less digits than its factorization.

40067730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148415 (or 148409 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 40067730 is about 6329.9075822637. The cubic root of 40067730 is about 342.1881082744.

The spelling of 40067730 in words is "forty million, sixty-seven thousand, seven hundred thirty".