64246240 has 24 divisors (see below), whose sum is σ = 151782120. Its totient is φ = 25698432.

The previous prime is 64246207. The next prime is 64246243. The reversal of 64246240 is 4264246.

It is a junction number, because it is equal to n+sod(n) for n = 64246199 and 64246208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64246243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200610 + ... + 200929.

It is an arithmetic number, because the mean of its divisors is an integer number (6324255).

Almost surely, 2^64246240 is an apocalyptic number.

It is an amenable number.

64246240 is an abundant number, since it is smaller than the sum of its proper divisors (87535880).

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

64246240 is a wasteful number, since it uses less digits than its factorization.

64246240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401554 (or 401546 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 64246240 is about 8015.3752251532. The cubic root of 64246240 is about 400.5123434802.

The spelling of 64246240 in words is "sixty-four million, two hundred forty-six thousand, two hundred forty".