145406478 has 32 divisors (see below), whose sum is σ = 340091136. Its totient is φ = 40578048.

The previous prime is 145406477. The next prime is 145406557. The reversal of 145406478 is 874604541.

It is a super-2 number, since 2×145406478² = 42286087688728968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145406477) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 38451 + ... + 42062.

It is an arithmetic number, because the mean of its divisors is an integer number (10627848).

Almost surely, 2^145406478 is an apocalyptic number.

145406478 is an abundant number, since it is smaller than the sum of its proper divisors (194684658).

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

145406478 is a wasteful number, since it uses less digits than its factorization.

145406478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80568.

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 145406478 is about 12058.4608470567. The cubic root of 145406478 is about 525.8492413972.

The spelling of 145406478 in words is "one hundred forty-five million, four hundred six thousand, four hundred seventy-eight".