245073780 has 288 divisors, whose sum is σ = 927763200. Its totient is φ = 51093504.

The previous prime is 245073779. The next prime is 245073781. The reversal of 245073780 is 87370542.

It is an interprime number because it is at equal distance from previous prime (245073779) and next prime (245073781).

It is a super-2 number, since 2×245073780² = 120122315286976800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245073781) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 694084 + ... + 694436.

It is an arithmetic number, because the mean of its divisors is an integer number (3221400).

Almost surely, 2^245073780 is an apocalyptic number.

245073780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245073780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (463881600).

245073780 is an abundant number, since it is smaller than the sum of its proper divisors (682689420).

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

245073780 is a wasteful number, since it uses less digits than its factorization.

245073780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423 (or 418 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 245073780 is about 15654.8324807390. The cubic root of 245073780 is about 625.7952798853.

The spelling of 245073780 in words is "two hundred forty-five million, seventy-three thousand, seven hundred eighty".