994540240 has 40 divisors (see below), whose sum is σ = 2412845568. Its totient is φ = 380519040.

The previous prime is 994540231. The next prime is 994540241. The reversal of 994540240 is 42045499.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×994540240² = 1978220577958515200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 994540240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (994540241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268416 + ... + 272095.

Almost surely, 2^994540240 is an apocalyptic number.

It is an amenable number.

994540240 is an abundant number, since it is smaller than the sum of its proper divisors (1418305328).

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

994540240 is a wasteful number, since it uses less digits than its factorization.

994540240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540547 (or 540541 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 994540240 is about 31536.3320631934. The cubic root of 994540240 is about 998.1767578082.

The spelling of 994540240 in words is "nine hundred ninety-four million, five hundred forty thousand, two hundred forty".