73649478 has 16 divisors (see below), whose sum is σ = 168341760. Its totient is φ = 21042696.

The previous prime is 73649467. The next prime is 73649533. The reversal of 73649478 is 87494637.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 876738 + ... + 876821.

It is an arithmetic number, because the mean of its divisors is an integer number (10521360).

Almost surely, 2^73649478 is an apocalyptic number.

73649478 is an abundant number, since it is smaller than the sum of its proper divisors (94692282).

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

73649478 is a wasteful number, since it uses less digits than its factorization.

73649478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1753571.

The product of its digits is 1016064, while the sum is 48.

The square root of 73649478 is about 8581.9274058920. The cubic root of 73649478 is about 419.1697088991.

The spelling of 73649478 in words is "seventy-three million, six hundred forty-nine thousand, four hundred seventy-eight".