78261652 has 12 divisors (see below), whose sum is σ = 156523360. Its totient is φ = 33540696.

The previous prime is 78261647. The next prime is 78261713. The reversal of 78261652 is 25616287.

It is a happy number.

78261652 is an admirable number.

It is a super-2 number, since 2×78261652² = 12249772347538208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1397502 + ... + 1397557.

Almost surely, 2^78261652 is an apocalyptic number.

It is an amenable number.

78261652 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

78261652 is a wasteful number, since it uses less digits than its factorization.

78261652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2795070 (or 2795068 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 78261652 is about 8846.5615919407. The cubic root of 78261652 is about 427.7430912275.

The spelling of 78261652 in words is "seventy-eight million, two hundred sixty-one thousand, six hundred fifty-two".