40572247 has 8 divisors (see below), whose sum is σ = 42996240. Its totient is φ = 38216640.

The previous prime is 40572229. The next prime is 40572269. The reversal of 40572247 is 74227504.

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 40572247 - 2¹⁵ = 40539479 is a prime.

It is a super-2 number, since 2×40572247² = 3292214453258018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40572547) 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, 15873 + ... + 18250.

It is an arithmetic number, because the mean of its divisors is an integer number (5374530).

Almost surely, 2^40572247 is an apocalyptic number.

40572247 is a deficient number, since it is larger than the sum of its proper divisors (2423993).

40572247 is a wasteful number, since it uses less digits than its factorization.

40572247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34193.

The product of its (nonzero) digits is 15680, while the sum is 31.

The square root of 40572247 is about 6369.6347618996. The cubic root of 40572247 is about 343.6183543505.

It can be divided in two parts, 405722 and 47, that added together give a square (405769 = 637²).

The spelling of 40572247 in words is "forty million, five hundred seventy-two thousand, two hundred forty-seven".