4653978 has 32 divisors (see below), whose sum is σ = 11007360. Its totient is φ = 1283520.

The previous prime is 4653977. The next prime is 4653989. The reversal of 4653978 is 8793564.

It is a happy number.

It is a super-2 number, since 2×4653978² = 43319022448968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (4653977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 693 + ... + 3128.

It is an arithmetic number, because the mean of its divisors is an integer number (343980).

Almost surely, 2^4653978 is an apocalyptic number.

4653978 is an abundant number, since it is smaller than the sum of its proper divisors (6353382).

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

4653978 is a wasteful number, since it uses less digits than its factorization.

4653978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3862.

The product of its digits is 181440, while the sum is 42.

The square root of 4653978 is about 2157.3080447632. The cubic root of 4653978 is about 166.9583363860.

The spelling of 4653978 in words is "four million, six hundred fifty-three thousand, nine hundred seventy-eight".