245311400 has 24 divisors (see below), whose sum is σ = 570349470. Its totient is φ = 98124480.

The previous prime is 245311393. The next prime is 245311403. The reversal of 245311400 is 4113542.

It can be written as a sum of positive squares in 3 ways, for example, as 161442436 + 83868964 = 12706^2 + 9158^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (245311403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 613079 + ... + 613478.

Almost surely, 2^245311400 is an apocalyptic number.

245311400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245311400 is an abundant number, since it is smaller than the sum of its proper divisors (325038070).

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

245311400 is a wasteful number, since it uses less digits than its factorization.

245311400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226573 (or 1226564 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 245311400 is about 15662.4199918148. The cubic root of 245311400 is about 625.9974685768.

Adding to 245311400 its reverse (4113542), we get a palindrome (249424942).

The spelling of 245311400 in words is "two hundred forty-five million, three hundred eleven thousand, four hundred".