63472240 has 40 divisors (see below), whose sum is σ = 158927328. Its totient is φ = 23435520.

The previous prime is 63472193. The next prime is 63472247. The reversal of 63472240 is 4227436.

63472240 = 956² + 957² + ... + 1020².

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

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 63472199 and 63472208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63472247) 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, 29476 + ... + 31555.

Almost surely, 2^63472240 is an apocalyptic number.

It is an amenable number.

63472240 is an abundant number, since it is smaller than the sum of its proper divisors (95455088).

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

63472240 is a wasteful number, since it uses less digits than its factorization.

63472240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61057 (or 61051 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 63472240 is about 7966.9467175324. The cubic root of 63472240 is about 398.8974638271.

Adding to 63472240 its reverse (4227436), we get a palindrome (67699676).

The spelling of 63472240 in words is "sixty-three million, four hundred seventy-two thousand, two hundred forty".