52780038 has 24 divisors (see below), whose sum is σ = 108218184. Its totient is φ = 17160960.

The previous prime is 52780037. The next prime is 52780061. The reversal of 52780038 is 83008725.

It is a super-2 number, since 2×52780038² = 5571464822562888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 52779990 and 52780008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52780037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7470 + ... + 12702.

It is an arithmetic number, because the mean of its divisors is an integer number (4509091).

Almost surely, 2^52780038 is an apocalyptic number.

52780038 is an abundant number, since it is smaller than the sum of its proper divisors (55438146).

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

52780038 is a wasteful number, since it uses less digits than its factorization.

52780038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5320 (or 5279 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 52780038 is about 7264.9871300643. The cubic root of 52780038 is about 375.1082069959.

The spelling of 52780038 in words is "fifty-two million, seven hundred eighty thousand, thirty-eight".