70780052 has 24 divisors (see below), whose sum is σ = 141778560. Its totient is φ = 30287520.

The previous prime is 70780049. The next prime is 70780057. The reversal of 70780052 is 25008707.

It is a super-2 number, since 2×70780052² = 10019631522245408, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 70779997 and 70780024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70780057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21449 + ... + 24527.

It is an arithmetic number, because the mean of its divisors is an integer number (5907440).

Almost surely, 2^70780052 is an apocalyptic number.

It is an amenable number.

70780052 is an abundant number, since it is smaller than the sum of its proper divisors (70998508).

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

70780052 is a wasteful number, since it uses less digits than its factorization.

70780052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3911 (or 3909 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 70780052 is about 8413.0881369447. The cubic root of 70780052 is about 413.6537436382.

Adding to 70780052 its reverse (25008707), we get a palindrome (95788759).

The spelling of 70780052 in words is "seventy million, seven hundred eighty thousand, fifty-two".