245412440 has 64 divisors (see below), whose sum is σ = 679613760. Its totient is φ = 77667840.

The previous prime is 245412439. The next prime is 245412443. The reversal of 245412440 is 44214542.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245412443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30071 + ... + 37350.

It is an arithmetic number, because the mean of its divisors is an integer number (10618965).

Almost surely, 2^245412440 is an apocalyptic number.

245412440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245412440 is an abundant number, since it is smaller than the sum of its proper divisors (434201320).

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

245412440 is a wasteful number, since it uses less digits than its factorization.

245412440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67452 (or 67448 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 245412440 is about 15665.6452149281. The cubic root of 245412440 is about 626.0834030288.

Adding to 245412440 its reverse (44214542), we get a palindrome (289626982).

The spelling of 245412440 in words is "two hundred forty-five million, four hundred twelve thousand, four hundred forty".