40213748 has 6 divisors (see below), whose sum is σ = 70374066. Its totient is φ = 20106872.

The previous prime is 40213681. The next prime is 40213753. The reversal of 40213748 is 84731204.

It can be written as a sum of positive squares in only one way, i.e., 31225744 + 8988004 = 5588^2 + 2998^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40213748.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5026715 + ... + 5026722.

It is an arithmetic number, because the mean of its divisors is an integer number (11729011).

Almost surely, 2^40213748 is an apocalyptic number.

It is an amenable number.

40213748 is a deficient number, since it is larger than the sum of its proper divisors (30160318).

40213748 is a wasteful number, since it uses less digits than its factorization.

40213748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10053441 (or 10053439 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 40213748 is about 6341.4310687730. The cubic root of 40213748 is about 342.6032806966.

The spelling of 40213748 in words is "forty million, two hundred thirteen thousand, seven hundred forty-eight".