78283401 has 32 divisors (see below), whose sum is σ = 129638400. Its totient is φ = 41005440.

The previous prime is 78283367. The next prime is 78283409. The reversal of 78283401 is 10438287.

It is not a de Polignac number, because 78283401 - 2¹⁴ = 78267017 is a prime.

It is a super-2 number, since 2×78283401² = 12256581744253602, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78283409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9205 + ... + 15533.

It is an arithmetic number, because the mean of its divisors is an integer number (4051200).

Almost surely, 2^78283401 is an apocalyptic number.

It is an amenable number.

78283401 is a deficient number, since it is larger than the sum of its proper divisors (51354999).

78283401 is a wasteful number, since it uses less digits than its factorization.

78283401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6389.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 78283401 is about 8847.7907411964. The cubic root of 78283401 is about 427.7827109843.

The spelling of 78283401 in words is "seventy-eight million, two hundred eighty-three thousand, four hundred one".