145870778 has 16 divisors (see below), whose sum is σ = 234944064. Its totient is φ = 67677120.

The previous prime is 145870759. The next prime is 145870789. The reversal of 145870778 is 877078541.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27800 + ... + 32627.

It is an arithmetic number, because the mean of its divisors is an integer number (14684004).

Almost surely, 2^145870778 is an apocalyptic number.

145870778 is a deficient number, since it is larger than the sum of its proper divisors (89073286).

145870778 is a wasteful number, since it uses less digits than its factorization.

145870778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60517.

The product of its (nonzero) digits is 439040, while the sum is 47.

The square root of 145870778 is about 12077.6975454761. The cubic root of 145870778 is about 526.4083462313.

The spelling of 145870778 in words is "one hundred forty-five million, eight hundred seventy thousand, seven hundred seventy-eight".